கலைச்சொல் பேரகராதி,
தொகுதி 14,
சூழலியல்
(ஆங்கிலம் - தமிழ்)
அகராதி | பழமொழி | விடுகதை | நூல் | திரைப்படம் | இதழ்
| abatement (pollution) | abiogenesis |
| abiotic | abiotic components |
| ablation | aboringe |
| abrasion | abscission |
| absolute humidity | absolute instability |
| absorbed water | absorbent |
| absorption | absorption spectrum |
| abundance | acacia |
| accelerated erosion | acceleration |
| acceptable daily intake | acceptable noise standard |
| accessory mineral | accidental species |
| accidental violation | acclimation |
| acclimatisation | accounting for nature |
| accretion | accretion theory |
| accumulation | accumulation zone |
| accumulator plant | accuracy |
| achieving sustainability | acid |
| acid (acidic) rock | acid and base |
| acid deposition | acid mine drainage |
| acid rain | acid soil |
| acid soot | acidity |
| acidophilous | acquired character |
| actinomycetales | action spectrum |
| activated carbon | activated charcoal |
| activated sludge | activated sludge process |
| activation | activation energy |
| activator | active flood plain |
| active immunity | active transport |
| activism | acute effects |
| adaptation | adaptive radiation |
| adaptive threshold | adaptive value |
| adaptive zone | adb (asian development bank) |
| addiction | additive mortality |
| additives | adiabatic (change) |
| adiabatic gradient | adiabatic lapse rate |
| adiabatic process | adirondack mountains |
| adsorbed water | adsorption |
| adulterants | adulteration |
| advanced waste treatment | advection |
| adventitious root | adventive plant |
| aeogenic | aeolian deposit |
| aeration | aeration, soil |
| aerial reconnaissance | aerial root |
| aerial spraying | aerial survey |
| aeroallergen | aerobic |
| aerobic / anaerobic system | aerobic bacteria |
| aerobic biological oxidation | aerobic composting |
| aerobic decomposer | aerobic process |
| aerobic respiration | aerobic sludge digestion |
| aerobic waste treatment | aerology |
| aestivation | aetiology |
| afforestation | africanized bees (apis mellifera scutellata) |
| afterburner | age |
| age class | age distribution |
| age structure | age structure pyramid |
| ageing | agent orange |
| agglomeration | aggradation |
| aggregate | aggression |
| agricultural chemicals | agricultural chemistry |
| agricultural drought | agricultural economics |
| agricultural engineering | agricultural geology |
| agricultural investigation | agricultural land |
| agricultural meteorology | agricultural pollution |
| agricultural region | agricultural revolution |
| agricultural revolution stages | agricultural science |
| agricultural stabilization and conservation service | agricultural waste |
| agrobiology | agroecology |
| agroforestry | agrology |
| agronomy | agrophilous |
| agrostology | aids (aquired immune deficiency syndrome) |
| air | air chemistry |
| air environment | air pollutant |
| air pollution | air pollution - sources |
| air pollution control | air pollution index |
| air pollution status | air quality |
| air quality standards | air sampler operation |
| air stripping | air-pollutant transport |
| airborne diseases | airmass |
| airshed | aitken counter |
| alar | alarm response |
| alaskan disaster | albedo |
| albinism | albumin |
| alcoholic fermentation | aldrin |
| algae | algal bloom |
| algal genus index | algal mat |
| algicide | alien species |
| alimentary canal | alkali metals |
| alkaline soil | alkalinity |
| alkaloid | alkyl sulphonates |
| allele | allergen |
| alley cropping | allogenic succession |
| allometry | allopatric speciation |
| alloy | alluvial |
| alluvial land | alluvium |
| almagorado cattle | alpha diversity |
| alpha particles | alpine tundra |
| alpine zone | alternate agriculture |
| alternate bearing | alternate energy sources |
| alternate host | alternate technology |
| alternation of generations | altimeter |
| altitude | altitudinal biome |
| altruism | alvarez hypothesis |
| amazon | amber |
| ambient | ambient noise |
| ambient pressure | ambient standards |
| amenity | ammonification |
| amnes test | amoco cadiz |
| amoeba | amoebiasis |
| amorphous | amphimixis |
| amphiphyte | amphoteric |
| anabatic wind | anabolism |
| anaerobic condition | anaerobic decomposer |
| anaerobic process | anamalous audibility |
| anatomy | androecium |
| androgen | androgenesis |
| anemia | anemometer |
| aneomophilous plant | angiosperm |
| angle of indrought | animal behaviour |
| animal glue | animal hauling |
| animal husbandry | animal rights |
| animal unit | animal waste |
| animal welfare | anion |
| annelida | annual plant |
| antagonism | antarctic air |
| antarctic icesheet | antarctica |
| anther | anthracite |
| anthrafilt | anthropo geomorphology |
| anthropocentric | anthropocentrism |
| anthropogenic effects | anthropogeny |
| anthropological area | antibiotic |
| antibody | antichloronesterase |
| anticyclone | antigen |
| antiknock additives | antimetabolite |
| antireflection coating | antiserum |
| antitoxin | aphotic zone |
| apomixis | apomorph |
| aposematic colouration | appetite |
| appletin layer | application factor |
| applied ecology | aquaculture |
| aquafalfa | aquatic chemistry |
| aquatic ecosystem | aquatic microbiology |
| aquatic toxicology | aquifer |
| aquifer restoration | arable |
| arachnid | aral sea |
| arctic air/haze | arctic zone |
| arenaceous | argon |
| arid | arid landscaping |
| arid zone | aridization |
| arsenic | artesian well |
| arthropoda | artificial classification |
| artificial fertilization | artificial habitat |
| artificial rain | artificial recharge |
| artificial reef | artificial regeneration |
| artificial reproduction | artificial selection |
| asbestos | asbestos removal |
| asbestosis | asexual reproduction |
| ash | ash pit |
| aspection | asphyxiant |
| assemblage | assimilation |
| assimilative capacity | association |
| assortative mating | asthenosphere |
| asthma | astroids |
| asulum | atavism |
| atmometer | atmosphere |
| atmospheric dispersion | atmospheric inversion |
| atmospheric pollutants | atmospheric pressure |
| atmospheric stagnation | atmospheric structure |
| atmospheric window | atom mass |
| atomic | atomic bomb |
| atomic energy | atomic fission |
| atomic fusion | atomic number |
| atomic structure | atomization |
| atp | attainment area |
| attenuation | attrial |
| auger | aurora borealis |
| australian realm | autapomorph |
| autecology (ecv.) | autoclave |
| autogamy | autogenic succession |
| autolysis | automatic weather station (aws) |
| automobile emission | automobile emission control |
| autotroph | auxin |
| auxotroph | available energy |
| available nutrient | available water |
| avalanche | aves |
| avoidance | avulsion |
| axil | azonal soil |
| bacillariophyta | back flow |
| back mutation | background extinction |
| background radiation | backhoe |
| backshore | bacteria |
| bacteriophage | bacteroicide |
| bacteroid | baffle |
| bag limit | bag seive |
| bag survey | bagasse |
| bagfilter | baghouse |
| baikal lake | bait |
| bakeries | balance in nature |
| balanced fertilizer | baltic sea |
| band | bank erosion |
| bark | barograph |
| barometer | barrage |
| basal metabolic rate | basalt rock |
| baseline survey | basic rock |
| basin | basin irrigation |
| battersea gas washing process | beaufort scale |
| beckman process | behavioural ecology |
| bell-weather species | benchmark |
| beneficial use | benthic organism |
| benzene | benzo(a)pyrene |
| berberis vulgaris | bergeron findeisen mechanism |
| beta diversity | beta particle |
| bhopal disaster | bhopal episode |
| bhopal tragedy | biennial |
| bigbang theory | binomial nomenclature |
| bioaccumulate | bioaccumulation |
| bioaerosols | bioassay |
| bioassay organism | biocentric |
| biochemical activity | biochemical oxygen demand |
| biochore | biochronology |
| bioclimatology | biocoenosis |
| bioconcentration | biodegradable (adj) |
| biodegradable (n) | biodegradable plastics |
| biodegradation | biodiversity |
| biodiversity conservation | biodiversity loss |
| biodiversity related legislations | biodynamic farming |
| biodynamics | bioenergetics |
| biofertilizer | biofilters |
| biofouling | biofuel |
| biogas | biogenesis |
| biogeochemical cycle | biogeochemistry |
| biohydrometallurgy | biological amplification |
| biological benchmark | biological clock |
| biological community | biological control |
| biological indicator | biological methylation |
| biological monitoring | biological organism |
| biological oxygen demand | biological pesticides |
| biological productivity | biological resources |
| biological rhythms | biological shield |
| biological treatment | biological warfare |
| biological weapons | biology |
| bioluminescence | biolysis |
| biomagnetism | biomagnification |
| biomass | biomass energy |
| biomass fuel | biome |
| biomedical waste | biomedical waste management |
| biometeorology | biomethanation |
| biomonitoring | biopark |
| biopesticide | biopiracy |
| bioregion | bioregionalism |
| biosequence | biosolids and sludge management |
| biosphere | biosphere reserve |
| biostimulant | biostratigraphy |
| biosynthesis | biosystematics |
| biota | biotechnology |
| biotelemetry | biotic |
| biotic association | biotic community |
| biotic components | biotic factors |
| biotic index | biotic potential |
| biotic pyramid | biotic succession |
| biotic transformation | biotope |
| biotopographic unit | biotroph |
| biotype | bioventing |
| bioweedicides | biozone or biostratigraphic units |
| birth defects | birth rate |
| bisexual | black hole |
| black lung disease | black snow |
| black soil | black water |
| blackout/brownout | blanket bog |
| bleaching | bloom |
| blow by | blue baby syndrome |
| blue revolution (fish farming) | blue-green algae |
| bog | bole |
| bomb calorimeter | bordeaux mixture |
| border strip irrigation | bore |
| boreal | boreal climate |
| boreal forest | borehole lithology |
| botanical garden | bottle bill |
| bottle gas | botulism |
| bougain-ville mine | boulder |
| boundry layer | box trap |
| brackish | brackish water |
| break water | breakpoint chlorination |
| breed | breeder reactor |
| breeding | brewary-wine manufacture |
| briquette | broiler |
| bronchial diseases | bronchitis |
| brown fields | browse |
| bubble bursting | buffer |
| buffer zone | bulk density |
| bund | burden of proof |
| bureau of mines | burried soil |
| c pathway | cadmium |
| calcareous soil | calcicole |
| calcium cycle | calorie |
| calorific value | calyx |
| cam pathway | cambium layer |
| camouflage | canadian deutrium - uranium reactors |
| canal irrigation | cancer |
| canker | canopy |
| capillarity | capillary (adj) |
| capillary action | capillary moisture |
| capillary pore | captive breeding |
| captive probagation and reintroduction | carbamate (group of pesticides) |
| carbaryl | carbohydrate |
| carbon | carbon adsorption |
| carbon assimilation | carbon budget |
| carbon cycle | carbon dating |
| carbon dioxide | carbon dioxide method |
| carbon emission | carbon monoxide |
| carbon offsets (co-emission offsets) | carbon sink |
| carbon source | carbon tax |
| carbonation | carbonic acid |
| carboniferous period | carbonization |
| carcinogen | carnivore |
| carrion | carrying capacity |
| cartel | cascade |
| casein | cash crop |
| castration | catabolism |
| catadromous | catalysis |
| catalyst | catalytic converter |
| catastrophic evolution | catastrophism |
| catastrophy | catch crop |
| catchment area | catena |
| cation | cation exchange |
| cation exchange capacity | cattle |
| caustic scrubbing | cell |
| cell differentiation | cell division |
| cell growth | cell membrane |
| cell theory | cell wall |
| cement | cenozoic era |
| census | centers for disease control and prevention |
| central pollution control board | centre of diversity |
| centre of origin | cereal |
| certification sample | cesium |
| cesspool | chain reaction |
| channel | channel improvement |
| channel storage | channel terrace |
| characteristic species | charcoal |
| chelate | chemical |
| chemical evolution | chemical gardening |
| chemical hazards | chemical oxidation |
| chemical oxygen demand | chemical pollutants |
| chemical precipitation | chemical spills |
| chemical waste | chemical weapon |
| chemical weed control | chemoautotroph |
| chemosynthesis | chernobyl disaster |
| child survivial revolution | chimney |
| chimpanzee | china syndrome |
| chinampas | chipko andolan movement |
| chlorache | chloramine |
| chlordane | chlorination |
| chlorine monoxide | chloro fluoro carbon (cfc) |
| chlorofluro methane (freons) | chlorophyll |
| chlorosis | cholera |
| choline | cholinesterase inhibitor |
| chromatography | chromo radiometer |
| chromosome | chromosome map |
| chromosome theory of heredity | chronic effects |
| chronic toxity | chronometic stratigraphy |
| chronometry | cigarette smoke |
| circadian behaviour | circadian rhythm |
| classification methods | classification, biological |
| clay | clay complex |
| clay composition | clay hard pan |
| clay mineral | clean air act |
| clean coal technology | clean water act |
| cleaner production | clear air |
| clear cutting | clearing |
| climate | climate change |
| climate classification | climate cycle |
| climate modelling | climate properties |
| climate system | climatic forecast |
| climatic prediction | climatic station |
| climatography | climatology |
| climax (ecological) | climber |
| cline | clod |
| clone | closed canopy |
| cloud | cloud chemistry |
| cloud classification | cloud droplet |
| cloud forest | cloud formation |
| cloud seeding | cloudbase |
| cloudburst | cloudcover |
| clover trap | coadaptation |
| coagulant aid | coagulation |
| coal washing | coalification |
| coase theorem | coast line |
| coastal plain | coastal water quality |
| coastal wetland | coastal zone management act |
| cocoon | cocos nucifera (coconut palm) |
| coevolution | coexistence |
| cogeneration | coke |
| coliform bacteria | collective action |
| colonization | combined sewer overflows (cso) |
| combustion residues | cometabolism |
| commensalism | commercial extinction |
| commercial fishing | commercial harvest |
| commercial waste management | communicable diseases |
| communication | community |
| community ecology | community forestry |
| compaction | comparative advantage |
| comparative risk | compensation level |
| complementary gene | compost |
| compression | condensation |
| condensation nuclei | condensation sampling |
| confined aquifer | congestion |
| conifer | conservation easement |
| conservation of biodiversity | conservation of energy |
| conservation status | conservation tillage |
| conservative properties of air | constant level balloon |
| constant species | constitutional provisions |
| constructive wave | consumer |
| consumerism | contagious |
| contaminant | contaminated soil |
| contemporary city | continental climate |
| continental drift | continental margin |
| continental shelf | continental slope |
| continential rise | contour map |
| control of gaseous pollutants | conurbation |
| convection | convection current |
| conventional pollutant | conventional tillage |
| convergent evolution | cooling pond |
| cooling tower | coprecipitation |
| coral reefs | cork |
| cornucopian premise | corolla |
| correlation | corridor |
| corrosion | corrosion and material degradation |
| corrosive (adj) | corruption |
| cortex | cosmic radiation |
| cosmology | cost-benefit analysis |
| cotyledon | cover |
| crater | crepuscular rays |
| crisscross inheritance | criteria pollutant |
| critical link | critical mass |
| critical organ | critical reaction |
| critically endangered species | crop |
| cross breeding | crumbly (adj) |
| crust | crustacean (adj) |
| cryogenics | cryophyllic |
| cryosphere | cryptic colouration |
| cryptobiosis | cs gas |
| cultural eutrophication | cultural forestry |
| cultural operations | culture |
| cutting | cyanidation |
| cyanides | cyanobacteria |
| cybernetics | cyclic population |
| cyclone | cyclone collector |
| cytogenetics | cytology |
| cytolysis | cytotaxonomy |
| cytotype |
| damping off | dams (environmental effects) |
| dark fog | dark mineral |
| dart gun | darwinism |
| dead zone | death rate |
| debt for nature swap | decibel |
| decline spiral | decomposer |
| decomposition | decontamination |
| decreaser species | deep ecology |
| deep sinking of liquid waste | deep-sea deposit, abyssal deposit |
| deep-well injection | deficiency |
| definition of radiometric age | deflation |
| deforestation | degeneration |
| degradation | degradation of land |
| degreasing | dehumidifier |
| delayed density dependent | delayed neutrons |
| deletion | demand curve |
| deme | demographic transition |
| demography | dendrochronology |
| dendrology | dendrometer |
| denitrification | denitrifying bacteria |
| dense forest | density |
| denudation | deodoriser |
| depasture | deposit |
| deposition | depression |
| derelict land | dermaptera (earwigs) |
| derris | desalination |
| desert | desert soil |
| desert varnish | desert vegetation |
| desertification | design for disassembly |
| dessicator | desulphurisation |
| detector | detergent |
| determinate growth | detoxification |
| detrital pathway | detritivore |
| detritus | deuterium |
| development | development values |
| devolopment of soil | devonian period |
| dew | diadromous |
| diagenesis | dialysis |
| diamond | dichloro diphenyl trichloroethane |
| die-off | dieback |
| diffusion | dioecious |
| dipterocap | direct competition |
| directional selection | discharge |
| discount rate | dishpan experiments |
| disinfectant | disinfection |
| dispersed soil | dispersion |
| dispersion model | displacement |
| disposable diapers | disruptive colouration |
| disruptive selection | dissemination |
| dissolved oxygen | dissolved solids |
| distillery waste | disturbance |
| diurnal | diurnation |
| divergence | divergent evolution |
| diversification | diversified farming |
| diversifying selection | diversion dam |
| diversion terrace | diversity |
| diversity index | dna finger printing |
| dodo | doldrums |
| domestic biodiversity | domestication |
| domin scale | dominance |
| dominant | dominant allele |
| dominant gene | donora smog incident |
| dormancy | dose response |
| doubling time | down draft |
| downland vegetation | downsing |
| drain | drainage |
| drainage basin | drainage pattern |
| draught animal | dredge |
| dressing | drift |
| drift nets | drilling mud |
| drip | drip irrigation |
| drive net | drizzle |
| drought | drought cycle |
| dry air | dry alkali injection |
| dry farming | dry feed |
| dry fog | dry heat |
| dry ice | dry land |
| dry mash | dry season |
| dryland farming | dumping |
| dune | dunes and dune erosion |
| duplicate gene | duplication |
| dust | dust bowl |
| dust collector | dust devil |
| dust formulation | dust mulch |
| dust-storm | duster |
| dutch elm disease | dwarf |
| dynamic equilibrium | dynamics |
| earth | earth charter |
| earth day | earth resources technology satellite (erts) |
| earth summit | earthwatch programme |
| earthworm | ecad |
| ecdysis | ecesis |
| echo | ecoanarchism |
| ecocide | ecocline |
| ecojustice | ecological (biological) integrity |
| ecological (environmental) economics | ecological agriculture |
| ecological association | ecological balance |
| ecological capacity | ecological climatology |
| ecological community | ecological concepts |
| ecological consumers | ecological crisis |
| ecological dominance | ecological efficiency |
| ecological energetics | ecological engineering systems |
| ecological factor | ecological genetics |
| ecological indicator | ecological niche |
| ecological optimum | ecological pyramid |
| ecological resilence | ecological restoration |
| ecological risk assessment | ecology |
| ecomark | economic growth and the environment |
| economic model | economic rent |
| ecoregion | ecosophy |
| ecosystem | ecosystem collapse |
| ecosystem function | ecosystem health |
| ecosystem integrity | ecosystem management |
| ecosystem modelling | ecosystem rehabilitation |
| ecosystem restoration | ecosystem structure |
| ecotoge | ecotone |
| ecotourism | ecotoxicology |
| ecotype | ecotypic variation |
| ectocrines | ecumenopolics |
| edaphic | edaphic factor |
| edaphology | effective height of emission |
| effective population size | effective porosity |
| effective precipitation | efficient allocation of resources |
| effluent | effluent charge |
| effluent standard | effluent tax |
| effluent treatment plants | ejestion |
| ekistics | el nino |
| electric crimeatoria | electric utilities |
| electrical energy | electro therapy |
| electro-osmosis | electromagnetic radiation |
| electromagnetic spectrum | electron acceptor and donor |
| electrostatic filter | electrostatic precipitation |
| electrostatic precipitators | electrotwinning |
| element | elmo bumpy torus |
| elutriation | eluviation |
| embioptera emblids | embryo |
| emergency trap | emigration |
| emission | emission control measure |
| emission factor | emission level |
| emission rate | emission trading |
| emphysema | emulsifier |
| encroach law | endangered species |
| endemic disease | endemic species |
| endemism | endergonic reaction |
| endogamy | endogenetic energy |
| endothermic reaction | endotoxin |
| energy | energy analysis |
| energy and the environment | energy auditing |
| energy budget | energy crisis |
| energy flow & food chains | energy intensity |
| energy of storms | energy policy |
| energy recovery | energy sources |
| energy strategies | energy technology |
| enhanced greenhouse effect | enology |
| enteric bacteria | enterotoxin |
| entropy | environment |
| environmental accounting | environmental aesthetics |
| environmental analysis | environmental audit |
| environmental awareness | environmental bench marking |
| environmental biology | environmental capacity |
| environmental chemistry | environmental clearance |
| environmental conservation | environmental cost |
| environmental crisis | environmental damage costing |
| environmental database | environmental degradation |
| environmental dispute resolution | environmental economics |
| environmental education | environmental enforcement |
| environmental engineering | environmental ethics |
| environmental gradient | environmental health |
| environmental history | environmental impact assessment (eia) |
| environmental impacts of coal | environmental indicator |
| environmental informatics | environmental justice |
| environmental law | environmental legislation |
| environmental literacy | environmental management of aquaculture |
| environmental medicine | environmental monitoring |
| environmental organization | environmental policy |
| environmental priorities | environmental protection |
| environmental protection act | environmental protection agency (epa) |
| environmental racism | environmental refugee |
| environmental reporting | environmental resistance |
| environmental resources | environmental risk assessment |
| environmental science | environmental standards |
| environmental statistics | environmental stress |
| environmental variance | environmentalism |
| environmentally responsible investing | environmentally sensitive area |
| enzootic | enzyme |
| ephemeral | ephemeral lake |
| ephemeral species | epidemic |
| epidemology | epigeal |
| epilithic | epipelagic |
| epipelic | epiphyte |
| epistasis | epizootic |
| epoch | equatorial easterlies |
| equatorical trough | equilibrium |
| equilibrium population | equilibrium species |
| equinox | equitability |
| era | eradication |
| ergot | erodible |
| erosion | erosion control |
| erosion resistant crop | erosional zone |
| essential host | essential mineral |
| estivation | estuary |
| ethanol | ethical investment |
| ethiopian realm | ethnic community |
| ethnobiology | ethnobotany |
| ethnology | ethnozoology |
| ethogram | etholgy |
| ethonocentrism | etiolating (etp) |
| eugenics | eukaryote |
| eulittoral zone | euphotic zone |
| eury | eustasy |
| eutectic | eutrophic |
| eutrophic lake | eutrophication |
| evaporation | evaporation pan |
| evaporation pond | evaporimeter |
| evapotranspiration | everglades |
| evergreen | evolution |
| evolution of atmosphere | evolutionary lineage |
| evolutionary species | evolutionary zone |
| ex situ conservation | exaptation |
| exchange capacity | exchange pool |
| exchangeable ion | exclusion principle |
| exclusive economic zone | exclusive species |
| excretion | exergonic reaction |
| exhaust gas recirculation | existence value |
| exobiology | exogenetic energy |
| exogenous | exoskeleton |
| exosphere | exothermic |
| exotic species | exotoxin |
| experimental lakes area | exploitation |
| exploitative competition | exploiter |
| exploratory behaviour | exponential growth |
| expressivity | expropriate (v) |
| external cost | extinction |
| extraction | extraterrestrial region |
| extreme temperature | extrinsic factor |
| extrinsic resources | extrusion |
| exxon valdez | eye of storm |
| fabric | fabric filter |
| facilitation | factor, specific |
| factors of production | factors, income |
| facultative microbe | facultative organism |
| faeces | faithful species |
| fallout | fallout wind |
| fallow | false fruit |
| false ring | family |
| famine | fanning |
| farm | farm animal |
| farm budgeting | farm economics |
| farm forestry | farm irrigation |
| farm loss | farm management |
| farm planning | farmer |
| farming | farmstead |
| farmyard manure | fault |
| fault types | fauna |
| faunal region | feasibility study |
| fecundity | feed |
| feed supplement | feedback |
| feedback mechanism | feedback system |
| feeder root | feeding habit |
| feeding standard | feedlot runoffs |
| feedlots | feedstock |
| felling series | felling, preparatory |
| felony | fen |
| feral | feral crop |
| feral species | fermentation |
| fertility | fertilization |
| fertilizer | fertilizer analysis |
| fertilizer formula | fertilizer waste |
| fibre | fibre crop |
| fibre glass | fibric layer |
| fidelity class | field capacity |
| field ornithology | field stripcropping |
| field work | filial imprinting |
| filicales | filling c |
| filters | filtration |
| final host | fingerprint method |
| finite resource | fire |
| fire ants | fire clay |
| fire ecology | fire fighting |
| fire ground | fire line |
| fish | fish culture |
| fish kill | fish manure |
| fish-pond fertilizer | fisheries |
| fishery conservation | fishery management |
| fishery science | fishing |
| fishing ground | fission |
| fission | fission in monkey group |
| fitness | fixation |
| flame cultivators | flame photometry |
| flame-thrower | flash flood |
| fleet | flight intercept trap |
| floatation | flocculation |
| flocculator | flood |
| flood control | flood forecasting |
| flood frequency | flood irrigation |
| flood plain | flood proofing |
| flood tide | flooding |
| flora | flora province |
| floriculture | flow equalisation |
| flow in ecosystem | flower |
| flowering plants | flue |
| flue gas | flue gas desulphurisation |
| flue-gas scrubbing | fluid feeder |
| fluidized bed combustion | fluorescence |
| fluoridation | fluorine |
| fluorocarbons | fluorosis |
| fluvial | fluvial erosion |
| fluvial transportation | flux |
| fly ash | flysch |
| flyway | foam |
| fodder | fodder crop |
| foehn wind | foetus |
| fog | fog showers |
| folding | folding types |
| foliage | food |
| food additives | food and drug administration (fda) |
| food borne infections | food poisoning |
| food policy | food pollution |
| food preservation | food processing |
| food security | food waste |
| food web | food-chain |
| food-chain efficiency | food-chain mutualism |
| foot and mouth disease | foraging |
| forb | foredune |
| foregut fermenter | forenisc radiology |
| forest conservation | forest decline |
| forest ecology | forest economics |
| forest engineering | forest environment |
| forest fire | forest floor |
| forest lands | forest products |
| forest resource | forest right |
| forest roles | forest service |
| forest types | formation |
| formation water | fossil |
| fossil fuel | fossil turbulence |
| fossil water | fossorial |
| founder effect | founder genome |
| fragmentation | free riders |
| free trade | freezing nucleus |
| freezing rain | freon |
| fresh water ecology | freshwater |
| freshwater resources | fringing forest |
| front end loader | frontier economy |
| frost | frost heaving |
| frost point | froth |
| frugivore | fruit |
| fruit processing | fuel |
| fuel cells | fuel efficiency |
| fuel resource | fuel rod |
| fuel switching | fuel wood |
| fuel wood crisis | fugitive emissions |
| fugitive species | fume |
| fumigation | function |
| functional response | fundamental niche |
| fungicide | fungus |
| funnel trap | fusion energy |
| fusion reactor | future generations |
| galapagos islands | game animal |
| game preserves | game reserve |
| game theory | gamma ray |
| gangue | garbage |
| garbology | garden |
| garden city | garden land |
| gas | gas cap |
| gas chromatography | gas mask |
| gaseous emission | gaseous exchange |
| gaseous pollutant | gasification |
| gasifier | gasoline |
| gastransfer | gastropods |
| gatt | gause principle |
| gdp | gelatin |
| gene | gene bank |
| gene clone | gene duplication |
| gene ecology | gene library |
| gene pool | gene resource centre, genelibrary |
| gene shear | gene therapy |
| gene transfer | general adaptation |
| general adaptation syndrome | general circulation |
| generalist | genetic complex |
| genetic conservation | genetic counselling |
| genetic diversity | genetic drift |
| genetic engineering | genetic erosion |
| genetic finger printing | genetic frequency (allelle frequency) |
| genetic imprinting | genetic isolation |
| genetic load | genetic map |
| genetic mapping | genetic pollution |
| genetic polymorphism | genetic purity |
| genetic resistance (or genetic tolerance) | genetic resources |
| genetic screening | genetic selection |
| genetic shift | genetic system |
| genetic variance | genetically engineered organism |
| genetically modified crops | genetics |
| genotype | genus |
| geobiont | geobotanical anomaly |
| geobotanical prospecting | geobotany |
| geochronology | geodegradable |
| geodesy | geographical information system |
| geographical range | geography |
| geological cycling | geological resources |
| geological survey | geological timescale |
| geomagnetic induction | geomorphology |
| geophagia | geophysical exploration |
| geophyte | geosere |
| geosphere or lithosphere | geostationary orbit |
| geostrophic wind | geothermal field |
| geotropism | germ |
| germ cell | germ layers |
| germ line | germ tube |
| germicide | germination |
| germplasm | gestation |
| geyser | gill nets |
| glacial cycle | glacial erosion |
| glacial flood | glacial hazard |
| glacial lake | glacial maximum |
| glacial period | glacier |
| glaciology | gland |
| glandular response | glazed frost |
| global baseline database | global climate system |
| global environment monitoring system | global positioning system |
| global radiation | global warming |
| global weather | globalisation |
| glycogen | gmo |
| gnp | gold mining |
| grade | graded contour furrow |
| grader | gradient |
| gradient analysis | gradient wind |
| gradualism | graft |
| grain | grain dryer |
| gram | gram reaction |
| graminivore | graphicacy |
| graptolites | grass |
| grass cover | grass crop |
| grass eater | grassberg mine |
| grassland | gravel |
| gravimetric analysis | gravimetry |
| gravitational field | gravitational water |
| gravity | grazing |
| grazing capacity | grazing ground |
| grazing land | grazing pathway |
| grazing, controlled | grazing, defered |
| grazing, seasonal | great lakes |
| green accounting | green algae |
| green belt | green chemistry expert system |
| green cross | green house gases potential |
| green manure | green manuring |
| green packaging | green plans |
| green politics | green products |
| green revolution | green tax |
| greenbelt movement | greenhouse effect |
| greenhouse gas | greenhouse warming |
| greenpeace | greens |
| greenwash | grey brown podzolic soils |
| greyair city | grit |
| grooming | gross domestic product (gdp) |
| gross ecological efficiency | gross economic value |
| gross national product | gross primary productivity |
| ground cover | ground fire |
| ground flora | ground fog |
| ground frost | ground moraine |
| ground rainfall | ground survey |
| ground water pollution | groundwater |
| groundwater harvesting | groundwater investigation |
| groundwater monitoring | groundwater recharge |
| groundwater runoff | grouping behaviour |
| grove | growing season |
| growth | growth curve |
| growth harmone | growth inhibitor |
| growth kinetics | growth limiting factors |
| growth ring | guanotrophy |
| guard cell | guild |
| gulf stream | gulf war hazards |
| gullied land | gully |
| gusher | gust |
| guttation | guzzler |
| gymnosperm | gynoecium |
| gynogensis | gyre |
| habit | habitat |
| habitat diversity | haemoglobin |
| hail | half life |
| halocarbon | halocline |
| halogens | halophile |
| halosere | handicap principle |
| hanging valley | haploid |
| haplont | hard pan |
| hard wood | harden off |
| hardness | hardy-weinberg law |
| harrow | harvest method |
| harvest mortality | harvest quota |
| harvestable surplus | hatchery |
| haustorium | hay |
| hay fever | hazardous and solid waste related legislation |
| hazardous chemical | hazardous substances |
| hazardous waste | hazardous waste landfill |
| hazardous waste site remediation | haze |
| heap leach | hearing loss |
| heat balance | heat energy |
| heat exchanger | heat flux |
| heat pollution | heat pump |
| heat recovery | heat transfer |
| heathland forest | heavy metal toxicity |
| heavy metals and heavy metal poisoning | heavy metals precipitation |
| heavy mineral | heavy soil |
| heliophyte | hells canyon |
| helminth | helophyte |
| hemp | herb |
| herbage | herbal medicine |
| herbarium | herbivore |
| herbosa | herding |
| hermaphrodite | herpetology |
| hetch hetchy reservoir | hetermorphism |
| heterogamy | heterosis |
| heterotroph | heterozygosity |
| hibernation | hierarchical classification method |
| hierarchy | high volume air sampling |
| high volume filtration | high-grading (mining, forestry) |
| high-level radioactive waste | high-solids reactor |
| high-yielding cereal | highly polluted cities |
| highyielding variety | hill fog |
| hillock tundra | histochemistry |
| holistic | holistic approach |
| holocaust | holocene |
| holophyly | holophytic nutrition |
| home range | homeopathy |
| homeostasis | homeotherm |
| homing instinct | hominid |
| homo erectus | homo habilis |
| homo sapiens | homogamy |
| homogeneity | homologous |
| homology | homozygosity |
| honey | honeycomb |
| honeydew | hormone weedkiller |
| horticulture | host |
| hot blast | hot rock |
| hot spot | household cleaner |
| household waste | hubbard brook experimental forest |
| hubble’s law | human development |
| human equivalent concentration | human evolution |
| human immunodeficiency virus | human priority area |
| human resources | human rights |
| human-powered vehicles | humanism |
| humate | humic acid |
| humidification | humidifier |
| humidity | humus |
| hunger | hunting and trapping |
| hurricane | hybrid zone |
| hybridization | hydrarch succession |
| hydraulics | hydric plant |
| hydric soil | hydroacoustics |
| hydrocarbon | hydrocarbon cracking |
| hydrochlorofluorocarbons | hydrodynamics |
| hydroelectricity | hydrofarming |
| hydrofracturing | hydrogen |
| hydrogen cyanide | hydrogen peroxide |
| hydrogen sulfide (hs) | hydrogenation |
| hydrogeology | hydrograph |
| hydrologcial drought | hydrological civilization |
| hydrological cycle | hydrological equation |
| hydrolysis | hydrophillic |
| hydrophily | hydrophobia |
| hydrophyte | hydroponics |
| hydropower | hydroseeding |
| hydrosere | hydrosphere |
| hydrostatics | hydrotaxis |
| hydrothermal | hydrotropism |
| hygrometer | hygrophilous |
| hygrophyte | hygroscopic |
| hyperosmatic | hyperphagy |
| hypertrophic | hypogeal |
| hypothermy | hypoxia |
| hyv |
| i.u.c.n (international union for conservation of nature) | iaa (inodoleacetic acid) |
| ice age | ice evaporation level |
| ice sheet | ice-cap |
| iceberg | iceblink |
| idiobiology | igneous rocks |
| illuvial soil | imf |
| immature organism | immature seed |
| immature soil | immigration |
| immobilization | immunisation |
| immunising agent | immunity |
| immunogenecity | immunology |
| impermeability | impermeable layer |
| impervious material | impervious soil |
| implantation | imprinting |
| improductive forest | improve cutting |
| in situ conservation | in situ gene bank |
| in vitro | in vivo |
| inappropriate technology | inbred line |
| inbreeding | inbreeding depression |
| incidental catch | incineration |
| incinerator | incipient lethal level |
| incompatibility | incomplete dominance |
| incubation | incubator |
| indeterminate growth | index |
| index fossil | index species |
| indicator | indicator organism |
| indifferent species | indigenous community |
| indigenous knowledge | indigenous species |
| indirect competition | indirect use |
| indirect user | individual distance |
| individualistic hypothesis | induction generator |
| industrial melanism | industrial waste |
| industrial waste treatment | industrial waste-water |
| industrialization | inexhaustible resource |
| infanticide | infauna |
| infectious waste | infiltrate (v) |
| infiltration | infinite resource |
| inflation | information index |
| infralittoral fringe zone | infrared photography |
| infrared radiation | infrasonics |
| inhabitant | inherited character |
| injection well | inland ice |
| inlier | innate character |
| innovation | inorganic |
| inorganic compound | insect |
| insecticide | insectivore |
| instability | instinct |
| institution | insulation |
| insurance | insurance value |
| integrated environmental conservation | integrated natural resource management |
| integrated nutrition management | integrated pest management |
| integrated waste management | intellectual property right (ipr) |
| intentional violator | interception |
| intercropping | interdependence |
| interferon | interflow |
| intergenerational justice | interglacial period |
| interior species | intermediate rock |
| internalizing costs | international agreements on environmental issues |
| international biological programme | international organization for standardization (iso) |
| international standards | international trade in toxic waste |
| international wildlife coalition | intersex |
| interspecific | interstadial |
| intertidal zone | intrinstic value |
| introduced specics | introductory stocking |
| introgression | invader species |
| inverse analysis | inverse stratification |
| inversion | inversion layer |
| inversity | invertebrates |
| iodine | ion |
| ion exchange treatment | ionisation |
| ionising radiation | ionosphere |
| iron minerals | irradiation of food |
| irri | irrigation |
| irrigation efficiency | irrigation method |
| irrigation system | irritant |
| island biogeography | iso-osmotic |
| isobar | isochrone |
| isogamy | isogeneic |
| isohaline | isohel |
| isohyet | isolating mechanism |
| isoline | isomer |
| isoseimal line | isotherm |
| isotope | isotopic dating |
| isotropic | isthmus |
| iteroparity | j-curve |
| java men | jet fuel |
| jet propulsion | jet stream |
| jetty | joint forest management (jfm) |
| jumping gene | jungle |
| junk food | jurassic |
| jute | juvenile |
| juvenile water | kame |
| kaolin | karst |
| karyo type | karyo typing |
| katabatic wind | kay (quay) |
| keiretsu | kelp |
| kerosene | kesterson national wildlife refuge |
| ketone | keystone species |
| kick | kiln |
| kin selection | kinaesthetic behavior |
| kinematics | kinesis |
| kinetic energy | kingdom |
| klinokinesis | klinotaxis |
| knoll | koppen climate classification |
| krator | kreb’s cycle |
| krill | kudzu |
| labour force | lac |
| lacquer | lactation |
| lactic acid | lacustrine |
| lagoon | lahar |
| laissez - faire | lake |
| lake erie | lake forest |
| lake tahoe | land |
| land - use plan | land breeze |
| land bridge | land capability classiffication |
| land classiffication | land fill |
| land mine | land pollution |
| land reclamation | land reforms |
| land tenure | land trusts |
| land-use | landrace |
| landsat | landscape |
| landscape architecture | landscape diversity |
| landslide | lapse rate |
| large marine ecosystem | larva |
| larviparous | laser |
| latency | latent heat |
| latent period | lateral line system |
| laterisation | laterite |
| latex | latex (paper) |
| latitude | lava |
| law of atmosphere | law of energy conservation |
| law of gravitation | law of nature |
| law of priority | law of tolerance |
| laws of thermodynamics | LD (lethal dose) |
| leachate | leaching |
| leaching field | lead |
| lead equivalent | lead line |
| lead management | lead net |
| lead shot | leaf |
| learning | least developed country |
| lee waves | leghold trap |
| legume | lentic |
| lentic system | lethal gene |
| lethal mutation | leucism |
| leukaemia | levee |
| level ditching | levelling |
| ley farming | liana |
| lidar | liebig’s law of minimum |
| life | life assemblage |
| life cycle | life science |
| life span | life system concept |
| life zone | life-form |
| life-table | light |
| light rapid transit system (lrt) | light reaction |
| lignin | lignite |
| lime | lime-kiln |
| limentic zone | limestone |
| limnology | lineage |
| lineage zone | linkage |
| lipid | liquid limit |
| liquid metal fast breeder reactor | liquifaction |
| liquified natural gas | liquified petroleum gas (lpg) |
| lithification | lithosol |
| lithostratigraphy | litter |
| littoral drift | littoral fringe |
| littoral zone | livelihood |
| liverwort | livestock |
| living fossil | loading |
| loam | local mate competition |
| locomotion | lodging |
| log | logged-over forest |
| logging (timber trade) | logging concession |
| logistic equation | logistic growth |
| long-term turbidity | longevity |
| longitude | longshore current |
| longshore drift | longwaves radiation |
| lost river | lotic environment |
| loudness | love canal |
| low arctic tundra | low cost sanitation |
| low-head hydroplant | lower atmosphere |
| lower critical temperature index | lower limit of tolerance |
| lowest achievable emission rate (laer) | lunar tides |
| lymph | lysimeter |
| lysozyme |
| mach number | macrobiota |
| macrobiotic | macroevolution |
| macrometeorology | macromutation |
| macronutrient | macrophagous |
| macrophyte | mad cow disease |
| madison process | magma |
| magnet | magnetic anomaly |
| magnetic dating | magnetic field |
| magnetic separation | magnetism |
| magnetohydrodynamics | magnetosphere |
| maintenance burn | maintenance evolution |
| maintenance stocking | major community |
| major forest produce | major nutrient |
| makeup water | malaria |
| malthusian theory | mamma |
| mammal | man-environment relationship |
| managed forest | management of tourism |
| management plan for bioparks | manatees |
| mangrove | mantle |
| manure | marasmus |
| marginal land | marginal physical output |
| marginal tax rate | mariculture |
| marine abrasion | marine ecosystem |
| marine forecast | marine invasion |
| marine park | marine pollution |
| marine swamp | maritime air |
| market | market system |
| marl | marsh |
| marsh gas | mass |
| mass burn | mass extinction |
| mass flow | mass production |
| mass spectrometry | mass transit |
| mass wastage | material cycling in ecosystems |
| material safety data sheets | mating behaviour |
| maximum permissible concentration | maximum permissible dose (mpp) |
| maximum permissible level | maximum residue limit |
| maximum sustainable yield | meander |
| measurement and sensing | measurement of odour |
| meat processing | medical waste |
| mediterranean climate | mediterranean forest |
| mediterranean scrub | mediterranean sea |
| megalopolis | megatherm |
| megathermal climate | meiosis |
| mendelism | mercury |
| mesic | mesobiota |
| mesoclimate | mesohaline |
| mesometerology | mesophile |
| mesophyll | mesophyte |
| mesosaprobic | mesothermal climate |
| mesotidal | mesotrophic |
| mesozoic | metabolic pathway |
| metabolic rate | metabolism |
| metabolite | metagenesis |
| metalimnion | metals, as contaminants |
| metamorphic rock | metamorphosis |
| metapopulation | metastability |
| metazoa | meteor |
| meteoric water | meteorological drought |
| meteorology | methane |
| methane digester | methanogenic |
| methyl tertiary butyl ether | methylation |
| methylmercury seed dressings | micro-ecosystem |
| micro-element | micro-evolution |
| microbial pest control | microbial toxins |
| microclimate | microconsumer |
| microcosm | microflora |
| microfossil | microhabitat |
| micrometeorology | micron |
| micronutrient | microphagous |
| micropropagation | microscale impact calculation |
| microscope | microtherm |
| microthermal climate | microwaves |
| migmatization | milankovitch weather cycles |
| mimicry | minamata disease |
| mine | mine spoil waste |
| mineral | mineral cycle |
| mineral deposit | mineral dressing |
| mineral nutrition | mineralization |
| mineralogy | minimal area |
| minimum instream flow | minimum national standards |
| minimum viable population | mining |
| mining waste | mining, undersea |
| ministry of environment and forests | minor community |
| minor forest produce | minor irrigation |
| minor nutrition | miocene |
| mirage | mire |
| mist | mistral |
| mitosis | mixed cloud |
| mixed crop | mixed economy |
| mixed farming | mixed grass prairie |
| mixing fog | mixing zones |
| mixotroph | mixture |
| mobbing | modelling |
| moder | modified mercalli scale |
| modularism | moist tropical forest |
| moisture budget | molecular biology |
| molecular clock | molecular evolution |
| molecular marker | molecular theory |
| molecule | mollic |
| mollusca | monitoring |
| monitoring programme | monkey-wrenching |
| monoecious | monogamy |
| monophagous | monosaccharide |
| monosex population | monotypic |
| monsoon | moraine |
| more | morphogenesis |
| morphology | morphotectonics |
| mortality | mortar |
| mosaic evolution | motivational conflict |
| mottle | mould |
| moulting | mount agung (gunung) |
| mountain | mountain breeze |
| mountain forest | mountain waves |
| movement | muck soil |
| mud rock | mud slide |
| mud volcano | mud-flat |
| mudflow | mulch |
| mull | mullarian mimicry |
| multidimensional niche | multiple alleles |
| multiple chemical sensitivity | multiple landuse strategy |
| municipal sewage | municipal solid waste |
| municipal solid waste composting | mustard gas |
| mutagen | mutant |
| mutation | mutation rate |
| mutator gene | mutualism |
| mycelium | mycobacterium |
| mycology | mycophyta |
| mycorrhiza | mycosis |
| mycotoxin | mycotropy |
| mycovirus | myrmecochory |
| myrmecophile | myrmecophyte |
| nanofossil | nastic movement |
| natality rate | national air toxics information clearing house |
| national estuary program | national forest |
| national marine fisheries service | national oceanic and atmospheric administration |
| national park | national pollutant discharge elimination system |
| national primary drinking water regulations | national seashore |
| native classification | native metal |
| native range | native species |
| natural community | natural disaster |
| natural draught | natural ecosystem |
| natural enemy | natural environment |
| natural extinction | natural fire |
| natural gas | natural habitat |
| natural history | natural increase |
| natural oil | natural pollutant |
| natural predator | natural product |
| natural radiation | natural regeneration |
| natural reserve forests | natural resource classification |
| natural resource economics | natural resource management |
| natural selection | natural subsidence |
| natural vegetation | natural woodland |
| naturalized organism | nature |
| nautical mile | neanderthal man |
| neap tide | near natural community |
| near shore | nebula |
| nectar | negative feed back |
| nekton | nematicide |
| nematoda | neo-darwinism |
| neoendemics | neoplasm |
| neotectonic | neotropical fanual region |
| neotropical migrants | neritic zone |
| nerve gas | nest |
| nest parasite | nestling |
| nestling site | net aboveground productivity |
| net community productivity | net production |
| net production efficiency | net radiation |
| net radiation budget | net radiation deficit |
| net reproductive rate | netropical realm |
| neuston | neutral mutation |
| neutral mutation theory | neutralisation |
| neutralism | neutron |
| ngo | niche breadth |
| nicotine | nidicolous |
| nidification | nidifugous |
| night-soil | nimby |
| nitrate | nitrate pollution |
| nitrification | nitrifying bacteria |
| nitrogen | nitrogen assimilation |
| nitrogen fertilizer | nitrogen fixation |
| nitrogen fixing plant | nitrogen fixing system |
| nitrogen oxide | nitrogen removal |
| nitrosamines | noble gas |
| nocturnal | nocturnal radiation |
| node | nodulation |
| nodule | nodule soil |
| noise | noise control |
| noise dose | noise dosimeter |
| noise exposure forecast | noise level |
| noise pollution | noise rating curves (numbers) |
| noise zoning | nomad |
| non-arable land | non-biodegradable |
| non-combustible refuse | non-commercial resource |
| non-conservative pollutants | non-degradable substance |
| non-game animal | non-homologous chromosome |
| non-native species | non-observable-adverse- effect-level |
| non-point sources of pollution | non-random mating |
| noncriteria pollutant | nondegradable pollutant |
| nonrenewable | nonrenewable resource |
| nonsense mutation | nonvascular plant |
| norm of irrigation | normal erosion |
| normal growing stock | normal increment |
| normal moisture capacity | normal seeding |
| normalising selection | novel protein food |
| noxious gas | noxious industry |
| npk | nuclear accident |
| nuclear cell | nuclear energy |
| nuclear explosions | nuclear fission |
| nuclear fuel | nuclear fuel cycle |
| nuclear fusion | nuclear material |
| nuclear park | nuclear power |
| nuclear powerplant | nuclear radiation |
| nuclear reaction | nuclear reactor |
| nuclear test ban | nuclear waste |
| nuclear weapon | nuclear winter |
| nucleotide, nuclide | nucleus |
| numerical abundance | numerical response |
| nurse crop | nurse tree |
| nursery | nutation |
| nutrient | nutrient budget |
| nutrient cycle | nutrient depletion |
| nutrient immobilization | nutrient solution |
| nutrient stripping | nutrient toxicity |
| nutrient use efficiency | nutrition |
| nutritional requirement | nymph |
| oasis | obligate organism |
| observation well | observatory |
| obsolescence | occupational air |
| occupational hazards | occupational noise |
| occupational pollution | ocean |
| ocean currents | ocean dumping |
| ocean energy resources | ocean outfalls |
| ocean pollution | ocean structure |
| ocean thermal energy conversion | ocean waves |
| oceanic trench | oceanography |
| octane number | octane rating |
| odor masking | odour control |
| odours | oestrus (esturs) cycle |
| off spring | off-road vehicles |
| offensive industry | office of civilian radioactive waste management (ocrwm) |
| offshore beach | offshore gas |
| offshore mining | offshore zone |
| offsite demand | ogallala aquifer |
| ohligate parasite | oil |
| oil drilling | oil embargo |
| oil refinery | oil refinery waste |
| oil reserve | oil tanker |
| oil-sand | oil-seepage |
| oil-shale | oil-slick |
| oil-spill | olfactory |
| oligocene | oligolectic |
| oligophagous | oligopoly |
| oligosaccharide | oligosaprobic |
| oligothermic | oligotrophic |
| oligotrophic soil | ombrotrophic |
| omnivore | oncogene |
| oncogenic | oncology |
| one-crop economy | one-crop economy |
| onsite needs | ontogenesis |
| oogenesis | ooze |
| open burning | open canopy |
| open community | open country |
| open drain | open dumps |
| open pollination | open population |
| open system | opencast mine |
| operative soil depth | opportunist violator |
| opportunistic organism | opportunity cost |
| optical meteor | optimum output |
| optimum population | optimum sustained yield |
| optimum value | optimum water content |
| optimum yield | option value |
| order | ordovician |
| ore | ore body |
| ore mineral | organic chemical industry |
| organic disease | organic disorder |
| organic farming | organic insecticide |
| organic manure | organic matter |
| organic pollution | organic recycling |
| organic selection | organic waste |
| organism | organismic |
| organismic viewpoint | organochlorine |
| organophosphate | organotroph |
| oriental fanual region | oriental realm |
| orientation response | ornamental tree |
| ornithology | ornithophily |
| orogenic rainfall | orogeny |
| orthogensis | orthokinesis |
| osmophilic | osmoregulation |
| osmosis | osmotic balance |
| osmotic potential | osmotic pressure |
| osmotrophic | otal oxygen demand |
| out welling | outbreeding |
| outbreeding depression | outcrop |
| outcrossing | outfall sewer |
| outlier | output |
| outwash | outwash deposit |
| outwash plain | ovarturn |
| ovary | over burden |
| over thrust | overconsolidated soil deposit |
| overcrowding | overcultivation |
| overdominance | overdraft |
| overexploitation | overfertilise (v) |
| overfishing | overflowing well |
| overgrazing | overirrigation |
| overland flow | overpopulation |
| overseeding | overspecialization |
| overuse | oviparity |
| ovoviviparity | ovulation |
| ovule | ovum |
| oxidation pond | oxidiation |
| oxidizing agent | oxygen cycle |
| oxygen demand | oxygen effect |
| oxygen method | oxygen sag |
| oxygen tension | ozonation |
| ozone | ozone depleting substances |
| ozone depletion | ozone hole |
| ozone impact | ozone layer |
| ozone layer protection | ozonometer |
| ozonosphere |
| paedogenesis | paedomorphosis |
| palaebiology | palaeoendemic species |
| palaeogeography | palaeolithic period |
| palaeontology | palaeozoic era |
| palatable species | palearctic realm |
| paleocene | paleoecology / paleolimnology |
| paleomagnetism | palynology |
| pangaea | panplain |
| paper | paper mill waste |
| parallel canal | parallel evolution |
| parallel system | parapatric |
| parapatric speciation | paraphyletic taxon |
| parasite | parasitism |
| parasitoid | parasitology |
| parataxonomy | paratonic movement |
| paratype | parazoa |
| parent rock | parent soil |
| parental care | pareto efficiency |
| pareto optimality (maximum social welfare) | park |
| parthenocarpy | parthenogenesis |
| partial sterilization | particle |
| particle density | particulate pollution |
| parts per billion (ppb) | parts per million (ppm) |
| parts per trillion (ppt)) | passenger pigeon (ectopistes migratorius) |
| passive solar design | pastoralism |
| pasture | patabiont |
| patent | pathogen |
| pathogen removal | pathogenesis |
| pathogenic | pathogenicity |
| pathological waste | pathotoxin |
| pavement | peat |
| peat soils | peatlands |
| ped | pedicel |
| pediment | pedogenesis |
| pedology | pedon |
| pekilo process | pelagic |
| penetrability | peptides |
| percolating filter | percolation |
| percolation pond | percoline |
| peregrine falcon (falco peregrinus) | perennial |
| perennial stream | perennial yield |
| perfect flower | perfect substituent |
| perianth | periglacial |
| periphyton | permaculture |
| permafrost | permanent parasite |
| permanent pasture | permanent retrievable storage |
| permanent village | permanent wilting point |
| permeability | permian |
| peroxyacetyl nitrate (pan) | persian gulf war |
| persistent compound | pest |
| pesticide | pesticide residue |
| petal | petiole |
| petrifaction | petrifield forest |
| petrochemical | petrogenesis |
| petrography | petroleum |
| petrology | phaeophyta |
| phagocytosis | phanerogam |
| phanerozoic eon | phenology |
| phenotype | pheromone |
| phloem | phoresy |
| phosphagen | phosphate rock |
| phosphates | phosphorescence |
| phosphorous | phosphorous cycle |
| phosphorus removal | phosphorylation |
| photic zone | photo active radiation (par) |
| photo ionization | photoautotroph |
| photochemical oxidant | photochemical reaction |
| photochemical smog | photodegradable plastic |
| photodissociation | photoecology |
| photogeology | photoinhibition |
| photokinesis | photolysis |
| photometer | photoperiod |
| photorespiration | photosynthate |
| photosynthesis | photosynthetic efficiency |
| photosynthetic quotient | photosystem |
| phototroph | photovoltaic cell |
| phreatic zone | phreatophyte |
| phyletic evolution | phyllotaxy |
| phylogeny | phylum |
| physical hazards | physiocracy |
| physiognomy | physiographic succession |
| physiology | phytoalexin |
| phytochrome | phytogeocoenosis |
| phytoplankton | phytoremediation |
| phytosociology | phytotoxin |
| piezometer | pigments |
| pioneer community | pisces |
| pisciculture | pit |
| pitch | pitcher irrigation |
| pith | pitot tube |
| placer mining | plagioclimax |
| plagiosere | plankton |
| plant | plant association |
| plant bog sere | plant breeding |
| plant classification | plant community |
| plant cover | plant ecology |
| plant formation | plant functional attribute |
| plant geography | plant kingdom |
| plant litter | plant nutrient |
| plant pathology | plantation |
| plantsere | plasma |
| plasmolysis | plastic pollution |
| plastic recycling | plastic soil |
| plastid | plastron |
| plate | plate tectonics |
| plate tectonics theory | plateau |
| platinoid | playa |
| pleistocene | pleomorphism |
| pliocene | plow pan |
| plug | plume |
| plutonium | pluvial |
| pluvial period | pneumatophore |
| poaching | podsol |
| poikilosmatic | poikilotherm |
| point data | point mutation |
| point source | point source pollution |
| poison | pole |
| pollard | pollarding |
| pollen | pollen analysis |
| pollination | pollutant |
| polluter pays principle | pollution |
| pollution by aquaculture | pollution control |
| pollution control in tanneries | pollution control in textile industry |
| pollution description of tanneries | pollution prevention |
| pollution problems | pollution problems in chemical industry |
| pollution problems in tanneries | pollution regulation |
| polonium | poly specific association |
| polyandry | polychlorinated biphenyl |
| polyculture | polycyclic aromatic hydrocarbons (pah) |
| polygamy | polygene |
| polygenic inheritance | polygyny |
| polymer | polymorphism |
| polyphyletism | polyploidy |
| polytopic evolution | polytypism |
| polyvinyl chloride (pvc) | pond |
| poppy | population |
| population biology | population cycle |
| population density | population dynamics |
| population ecology | population eruption |
| population explosion | population genetics |
| population growth | population regulation |
| population, soil | pore |
| pore pressure | porosity |
| postglacial period | postmodernism and environmental ethics |
| potable water | potassium |
| potential climax forest | potential energy |
| potential temperature gradient | potential transpiration |
| poverty line | power line |
| power plants | prairie |
| precautionary principle | precipitation |
| precycling | predation |
| predator | predator control |
| predatory price cutting | preliminary treatment |
| presence indicator | preservation |
| preservative | prevailing wind |
| price elasticity of demand | primary air pollutants |
| primary consumer | primary mineral |
| primary pollutant | primary value |
| primary, secondary and tertiary treatments | primitive |
| principle of seggregation | prisere |
| privatization | prodelta |
| producer | production |
| production ecology | production of ecosystems |
| production possibility | productive soil |
| productivity | profoundal zone |
| progeny | progressive evolution |
| progressive feeding | progressive succession |
| project tiger | prompt neutrons |
| propagule | protandry |
| protected area | protein |
| protest | protist |
| protogyny | proton |
| protoplasm | protore |
| protosoil | protozoa |
| prune | psammophyte |
| psammosere | pseudocopulation |
| pseudofossil | pseudomorph |
| pseudopodium | pseudosteppe |
| psychrometer | pteridophyte |
| puddle | puddled soil |
| puddling | pulses |
| pumice | pumped storage |
| pumped storage dam | pumping station |
| punctuated equilibrium | pure line |
| pure seed | putricible waste |
| pyramid of food | pyroclastic material |
| pyroclastic rock | pyroheliometer |
| pyrometer | pyrrophyta (fire algae) |
| quad | quadrant |
| quadrate method | quagmire |
| quake | quaking bog |
| quality assurance | quality class |
| quality control | quality of life |
| quantum | quantum electrodynamics |
| quantum electronics | quantum evolution |
| quantum field theory | quantum number |
| quantum theory | quarantine |
| quark | quarry |
| quarrying | quartan fever |
| quartz | quartzite |
| quaternary consumer | quaternary period |
| quench layer | quenching |
| quercus | quick clay |
| quick flow | quick lime |
| quick sand | quick silver |
| quick test | quick water |
| quiescent | quilted surface |
| quinine | quininism |
| quota | r-selection |
| rabies | race |
| rachis | racial discrimination |
| rad | radar |
| radar tracking | radial drainage |
| radial symmetry | radiant energy |
| radiation | radiation dose |
| radiation ecology | radiation exposure |
| radiation flux | radiation fog |
| radiation pressure | radiation sickness |
| radiation units | radiatively active gas |
| radio active | radio tracking |
| radioactive damage | radioactive decay |
| radioactive emanation | radioactive equilibrium |
| radioactive material | radioactive pollution |
| radioactive series | radioactive tracer |
| radioactive wastes | radioactivity |
| radiobiology | radiography |
| radioisotope | radioisotope imaging |
| radiology | radiometer |
| radium | radon gas |
| rain | rain crust |
| rain excess | rain guage |
| rain making | rain out |
| rain shadow | rain water |
| rainbow | raindrop erosion |
| rainfall | raised beach |
| random assortment | range |
| range ecology | range land |
| range management | rapids |
| rare earth element | rare gas |
| rate of run-off | ratify |
| rational decision | rational expectation |
| raunkiaer’s life-forms classification | ravine |
| raw material | re-entrainment |
| re-radiation | reaction turbine |
| reaction, soil | real gdp per capita |
| real price | realised niche |
| recalcitrant | recalcitrant seed |
| recarbonation | receptor |
| recession | recharge |
| reciprocal altruism | reciprocal crosses |
| reclaim | reclamation |
| recombinant DNA technology | recombination |
| recreatability | recreation ecology |
| rectangular speciation | recurrent parent |
| recurrent selection | recycle |
| recycling | recycling sewage |
| red algae | red beds |
| red clay | red data book |
| red list | red tide |
| redirected behaviour | reduzate |
| reed | reef |
| reef trap | refeeding of waste |
| refining | reflected wave |
| reflection | reflectivity |
| reflex | reflex action |
| refracted wave | refraction |
| refractive index | refrigerant |
| refuge | refugees |
| refugium | refuse - derived fuels (rdf) |
| reg | regional park |
| regional planning | regional sea |
| registered seed | regression |
| regulating reservoir | regulatory gene |
| rehabilitation | rehabilitation of dumpsites |
| reintroduction | rejuvenation |
| relative abundance | relative age |
| relative biological effectiveness | relative humidity |
| relative importance value | relay cropping |
| release cutting | relic |
| relict sediment | relict species |
| relief drawn | relief map |
| religion and the environment | rem |
| remedial investigation | remediation |
| remote sensing | renewable resource |
| repel | repellant |
| replacement | reporter gene |
| reproduction | reproduction effort |
| reproduction isolating mechanism | reproduction rate |
| reproductive allocation | reproductive isolation |
| reptile | reserve food |
| reservoir | reservoir pool |
| reservoir rock | reservoir sedimentation |
| residence time | residual reproductive value |
| resilience | resilin |
| resin | resistance |
| resistance breaking biotope | resistance breaking biotype |
| resistant residue | resonance |
| resource | resource availability |
| resource base | resource consumption |
| resource distribution | resource gathering activity |
| resource inventory | resource management |
| resource pollution | resource processing |
| resource recovery | resource recycling |
| resource scarcity | resources reserve |
| respirable dust | respiration |
| respiration quotient (rq) | respiratory diseases |
| respiratory pigment | resting metabolic rate |
| restoration | restoration ecology |
| restorer gene | retarded timing |
| retension period | reticulate evolution |
| retrievable storage | retrogression |
| retting | return period |
| reuse | reverse genetics |
| reverse mutation | reverse osmosis |
| rhizobium | rhizosphere |
| rhodophyta | ria |
| richter scale | rickets |
| ridge | rift valley |
| right-to-know | rill |
| ring species | ring spot |
| rip current | riparian habitat |
| riparian land | riparian rights |
| ripple | riprap |
| risk analysis | risk assessment (public health) |
| risk assessors | ritualization |
| river | river bar |
| river basin | river bed |
| river blindness | river capture |
| river cliff | river drift |
| river flow | river network |
| river pollution | river profile |
| river system | river terrace |
| river tide | river valley |
| river valley project | river wash |
| river zones | rna |
| road | rock cycle |
| rock debris | rock formation |
| rock glacier | rock sand clay sere |
| rock weathering | rodent |
| rodenticide | root |
| root nodule | root pressure |
| root-shoot ratio | rotation |
| rotation grazing | rotation pasture |
| rotifera | row crop |
| rubbish | run-off |
| run-off cycle | run-off pit |
| run-off plot | runaway hypothesis |
| rural - urban migration | rural land use planning |
| rust |
| sacred grove | safety equipment |
| safety lamp | safety measure |
| sahel | saline alkali soil |
| saline giant | saline sodic soil |
| salinity | salinization |
| salinization of soil | salmon |
| salt | salt (road) |
| salt affected soil | salt balance |
| salt dome | salt field |
| salt fingering | salt index |
| salt lake | salt marsh |
| salt mining | salt pan |
| salt stress | salt water habitat |
| salt water intrusion | saltation |
| sample | sample sites |
| sampling airpollution | sampling instruments |
| sampling of particulate | sanctuary |
| sand | sand bar |
| sand core | sand drift |
| sand mining | sand-dune |
| sandbank | sandstone |
| sanitary landfill | sanitary sewage |
| sanitary sewer | sanitation |
| sanitation, food | sanitation, forest |
| sanitation, milk | saprobe |
| sapropel | saprophage |
| saprophyte | saprotroph |
| saprovore | sapwood |
| satellite | satellite city |
| satellite sounding | satiation |
| saturated air | saturation |
| saturation deficit | savanna |
| savanna woodland | scale |
| scale insects | scarcity |
| scattering | scavenger |
| scavenging | scent marking |
| schistosomiasis | schizoendemic species |
| school | science |
| sclerophyllous | sclerophyllus vegetation |
| scoria | scow |
| scramble competition | scrub |
| scrubber | scurvy |
| sea | sea breeze |
| sea floor spreading | sea fog |
| sea grass | sea ice |
| sea level change | sea level measurement |
| sea level rise | sea otter (enhydra lutris) |
| sea surface temperature | sea water distillation |
| sea weed | seafood |
| seafood processing | search image |
| searching | seasonal consumptive use |
| seasons | secateurs |
| secchi disc | second crop |
| secondary burner | secondary consumer |
| secondary energy source | secondary fermentation |
| secondary host | secondary metabolite |
| secondary mineral | secondary pollutant |
| secondary productivity | secondary root |
| secondary succession | secondary treatment |
| secondary value | secondary woodland |
| secretion | secure landfills |
| sedentary | sedge |
| sediment | sedimentary cycle |
| sedimentation pond | seed bank |
| seed dispersion | seed germination |
| seed multiplication | seed protection |
| seed technology | seed tree cutting |
| seep drain | seepage |
| seepage velocity | segregating effect |
| segregation | seiche |
| seismic survey | seismogram |
| selection | selection coefficient |
| selection pressure | selective absorber coatings |
| selective absorption | selective breeding |
| selective logging | selective species |
| selenium | self mulching soil |
| self-cleaning | self-diffusion |
| self-fertilization | self-incompatibility |
| self-pollination | self-purification |
| self-regulation | selfing |
| selfish behaviour | selfish genes |
| semelparity | semi-collective village |
| semi-desert scrub | semi-evergreen tropical forest |
| semi-natural woodland | semi-parasite |
| semi-permanent village | semi-permeable membrane |
| senescence | senescent lake |
| sense organs | sensible temperature |
| sentinel | sepal |
| septic | septic tank |
| sequestration | seral stage |
| sere | serial polygamy |
| sericulture | serule |
| sessile | seston |
| settling velocity | sewage |
| sewage farming | sewage fungus |
| sewage gas | sewage purification |
| sewage sickness | sewage sludge |
| sewage sludge composting | sewage sludge disposal |
| sewage treatment | sex chromosome |
| sex determination | sex ratio |
| sexual dimorphism | sexual reproduction |
| sexual selection | shallow soil |
| shallow subsidence | share cropping |
| sheep month | sheet composting |
| sheet erosion/wash | shelf-life |
| shelford’s law of tolerance | shelter wood cutting |
| shelter-belt | shield |
| shield volcanoes | shifting cultivation |
| shoal | shock pollution |
| shock waves | shola |
| shoot | short circuit |
| short wave radiation | short-day plant |
| shredding | shrimp farming |
| shrub | sial |
| sibling | sickle-cell disease |
| silage | silica gel |
| silica sand | silicate |
| silicosis | silk |
| silt | silting |
| silurian period | silva |
| silviculture | sima |
| simpson’s diversity index | single-celled organism |
| sink | sinkholes |
| sinter plant | site |
| site type | skeletal soil |
| slant drilling | sleep |
| slightly hygroscopic | slime mould |
| slope | slope culture |
| slope erosion | sludge |
| sludge processing | sludge treatment and disposal |
| slurry | smelter |
| smelting | smog |
| smoke | smoke control zone |
| smudging | snow avalanchs |
| snowline | soap |
| social behaviour | social benefit |
| social dominance | social ecology |
| social environment | social forestry |
| social justice | social rank |
| socialism | society |
| sociobiology | sociosphere |
| soda lake | sodic soil |
| soil | soil aggregate |
| soil air | soil analysis |
| soil association | soil classification |
| soil cohesion | soil colloid |
| soil colour | soil compaction |
| soil complex | soil composition |
| soil conditioner | soil conservation |
| soil creep | soil degradation |
| soil density | soil depth |
| soil drainage | soil erosion |
| soil fertility | soil genesis |
| soil geography | soil horizon |
| soil liner | soil management |
| soil map | soil map |
| soil maturity | soil mineral |
| soil moisture | soil morphology |
| soil nutrient | soil organic matter |
| soil organism | soil permeability |
| soil porosity | soil productivity |
| soil profile | soil salinization |
| soil scarification | soil separates |
| soil series | soil series |
| soil slip | soil structure |
| soil survey | soil survey |
| soil temperature | soil texture |
| soil water | solar cell |
| solar collector | solar constant |
| solar cycle | solar detoxification |
| solar device | solar drier |
| solar energy | solar energy conversion plan |
| solar flare | solar heating |
| solar pond | solar radiation |
| solar spectrum | solar still operation |
| solar thermal power system | solar wind |
| solarimeter | solid lubricant |
| solid waste | solid waste incineration |
| solid waste landfilling | solid waste management |
| solid waste recycling and recovery | solid waste volume reduction |
| solidification | solstice |
| solum | solution |
| somatic cell | somatic mutation |
| sonar | sonic |
| sonic boom | sonometer |
| soot | sound |
| sound level | sound level meter |
| sound power or acoustic power | sour gas |
| source control | source separation |
| sources of water pollution | southern oscillation |
| space | spaceship earth |
| spagniherbosa | spawn |
| specialist herbivore | specialization |
| speciation | species |
| species abundance | species based management |
| species density | species diversity |
| species group | species longevity |
| species population | species richness |
| species selection | species turnover |
| speciesism | specific humidity |
| specific retention | specific yield |
| specimen | spent fuel |
| sperm | sphenophyte |
| spine | spit |
| spite | splint-coal |
| split steam | spoil |
| sponge | spontaneous mutation |
| spore | sporophyte |
| sport hunting | spray |
| spray drift | spring bloom |
| spring tide | sprinkler system |
| sprout | squall |
| stability | stability |
| stabilization | stabilization pond |
| stabilizing selection | stable age distribution |
| stable equilibrium | stack |
| stack emissions | stagnant water |
| stakeholders | stall feeding |
| stamen | stand density |
| stand structure | standard |
| standing biomass | standing crop |
| starch | stasigenesis |
| stasigenesis | stasipatric speciation |
| stasis | state pollution control board |
| state property | static life-table |
| static reserve index | statistical method |
| statistics | steady state equilibrium |
| steady state theory | steam |
| stem | stem flow |
| stenotopic | steppe |
| sterilization | steroid |
| stigma | sting |
| stink gland | stipule |
| stock | stocker |
| stolon | stoma |
| storm beach | storm runoff |
| storm surge | strain |
| strain development | strartosphere |
| strategic minerals | strategies for ecodesign |
| stratimatric stratigraphy | stratovolcanoes |
| stratum | stream |
| stream channelization | stress |
| striation | strip cropping |
| strip grazing | strip mining |
| strip-farming | structural adjustment programme |
| structural trap | structure |
| stubble | stubble mulching |
| style | subalpine forest |
| subclimax vegetation | subdominant |
| subdominant species | subduction zone |
| subirrigation | sublimation |
| submerged forest | submergence marsh |
| submergent vegetation | subsidence |
| subsidy | subsistence agriculture |
| subsistence economy | subsistence farming |
| subsoil | subsoil water |
| subspecies | substandard seed |
| substitutable resource | substrate feeder |
| substratum | subtropical deserts |
| succession | succulent plant |
| sucker | sucrose |
| suffruiticose (suffrescent, suffrutescent) | sulfate particles |
| sullage water | sulphur |
| sulphur cycle | sulphur dioxide |
| sulphur pollution | sulphuric acid |
| sun | sunk cost |
| sunlight | sunspot |
| sunstroke | superconductivity |
| supercontinent | supercooling |
| superdominance | supergene |
| superheating | superorganism |
| superparasitism | supersaturation |
| supertanker | supply curve |
| suppressor mutation | supralittoral zone |
| surf | surface inversion |
| surface mining | surface water |
| surface wave | surface wind |
| surfactant | survey |
| survival | survival of the fittest |
| survivorship | susceptibility |
| suspended matter | sustainability |
| sustainable agriculture | sustainable development |
| sustainable forestry | sustainable society |
| sustainable tourism | sustainable use |
| sustainable yield | suture |
| swamp | swap (v) |
| sweet gas | swidden farming |
| swiftlet | swill |
| symbiont | symbiosis |
| symmetrical hybrid | sympatric speciation |
| sympatry | sympile |
| synanthrope | synapomorphy |
| syncline | syndrome |
| synecology | synergism |
| synfuel | syngeresis |
| synnecrosis | synonym |
| synoptic meteorology | synoptic observation |
| synthesis | synthesis gas |
| synthetic fuels | synthetic material |
| synthetic natural gas | synthetic theory |
| synusia | system |
| system engineering | systemic |
| systemic insecticide | systems analysis |
| systems ecology | systems theory |
| taiga | tail race |
| tailing | tailings pond |
| takings | talc |
| tall stacks | tangent arc |
| tannery waste | tannin |
| tap root | tapir |
| tar | target species |
| taxon | taxonomy |
| technology | technology transfer |
| technosphere | tectonic plate |
| telemetry | tellico dam |
| temperate forest | temperate glacier |
| temperate grassland | temperature |
| temperature inversion | tendril |
| tensimeter | tentacle |
| tenure | terminator technology |
| termite | terrace |
| terracing | terrain |
| terrestrial ecosystem | territorial water |
| territoriality | territory |
| tertiary consumer | tertiary period |
| tertiary treatment | tetraethyl lead |
| texture | thalamus |
| thallophyta | thallus report |
| the global | the ramsar convention |
| theory | theory of differentiation |
| theory of generic cycle | thermal cracking |
| thermal desorption | thermal efficiencey |
| thermal energy | thermal erosion |
| thermal gradient | thermal inversion |
| thermal plume | thermal pollution |
| thermal precipitation | thermal soaring |
| thermal stratification | thermocline |
| thermodynamics | thermodynamics, laws of |
| thermogram | thermograph |
| thermohygrograph | thermometer |
| thermophile | thermophilic digestion |
| thermophilic micro-organism | thermoplastics |
| thermoregulation | thermosetting polymers |
| third world | third world pollution |
| thorn | thorn forest |
| thorn shrub | threatened species |
| threshold dose | threshold limit value (tlv) |
| threshold of pain | threshold population density |
| throughfall | throughflow |
| throw away society | thrust |
| thunderstorm | tick |
| tidal current | tidal energy |
| tidal flat | tidal inlet |
| tidal power | tidal range |
| tidal stream | tides |
| till | tillage |
| tiller | tilt meter |
| tilth | timber |
| timber log | timberline |
| time period | time series |
| time zone | times beach, missouri |
| tipping fee | tissue culture |
| tobacco | toilets |
| tolerance | tolerance level |
| tolerance range | top predator |
| top soil | top-dressing |
| topgeneous mire | topography |
| toposequence | tornado and cyclone |
| torrey canyon | total cost |
| total economic value | total pollution loading |
| total population curve | tourism benefits |
| tourism impacts | toxic |
| toxic pollution | toxic substance |
| toxic waste | toxic waste management |
| toxicity | toxicology |
| trace element | trace fossil |
| tracer | trade and environment |
| trade in pollution permits | trade waste |
| trade winds | tradeable emission permit |
| traditional agriculture | tragedy of the commons |
| trail smelter arbitration | trait |
| trans-alaska pipeline | trans-amazonian highway |
| transboundary movement of wastes | transboundary pollution |
| transcription | transduction |
| transfer station | transformation |
| transfrontier pollution | transgenic organism |
| transgression | transhumance |
| transhumance pastoralist | translation |
| translocation | transluscent |
| transmission loss | transmutation |
| transparent | transpiration |
| transpire (v) | transplantation |
| transport and transformation | transported soils |
| trash | trawler |
| treatment of paper waste | treatment plant |
| treaty | tree |
| tree farm | tree line |
| tree ring | tree ring index |
| tree weed | tree, elite |
| tree, protected | tree, reserved |
| tremor | trench |
| triassic period | tribe |
| trickle irrigation | trickling filter |
| trigger factor | tritium |
| trochosphera (trochophore) | trophallaxis |
| trophic level | trophic structure |
| trophobiosis | trophogenic region |
| tropic level | tropical air |
| tropical desert vegetation | tropical grassland |
| tropical rain forest | tropical storm |
| tropism | tropopause |
| troposphere | trough |
| tsunami | tuber |
| tuff | tumour |
| tundra | tundra soil |
| tungsten | turbidite |
| turbidity | turbidity current |
| turbine | turgor |
| turgor pressure | turnover |
| turnover rate | turnover time |
| turtle excluder device (ted) | twister |
| type specimen | typhoon |
| ultimate cause | ultrapure water |
| ultrasound | ultraviolet radiation |
| umbelliferae | umbrella species |
| unconfined aquifer | unconformity |
| underflow | underground mine |
| underground stream | undergrowth |
| undernutrition | understorey |
| undertow | underwood |
| unequal crossing over | ungulate |
| unicellular organism | unicentric distribution |
| unisexual | univalent |
| universal indicator | universal solvent |
| universe | univoltine |
| unleaded petrol | unproductive forest |
| unsaturated flow | unsustainable development |
| upland catchment water | upstream |
| upwelling | uranium |
| uranium enrichment | urban contamination |
| urban ecology | urban heat island |
| urban renewal | urban sprawl |
| urban waste | urbanization |
| urea | urecotelic |
| use value | uses of solar heat |
| utilitarianism | vaccine |
| vacuole | vacuum sewer |
| vadose water | vadose zone |
| vagility | vagrant benthos |
| valdez principles | valley |
| valley bog | valley fog |
| valley wind | value |
| value capital | value devastation |
| value exploitation | value, replacement |
| vapour | vapour extraction |
| vapour plume | vapour pressure |
| vapour pressure deficit | vapour recovery system |
| vapourisation | variable cost |
| variance | variation |
| variety | varve |
| vascular bundle | vascular plant |
| vector | vector control |
| vegan | vegetarianism |
| vegetation | vegetation formation |
| vegetation index | vegetation mosaic |
| vegetation propagation | vegetation study |
| vegetative reproduction | vegetative state |
| vehicular pollution | veld |
| venation | vent |
| venturi effect | verfluent |
| verm | vermiculite |
| vernalization | vertebral column |
| vertebrate | vervical |
| vestigival | viability |
| vicariad | vicarious species |
| victims’ compensation | vigilance |
| viral vaccine | virement |
| virgin forest | virgin soil |
| virion | virology |
| virulence | virulent bacteria |
| virulent bacteriaphage | virulent virus |
| visibility | visible light spectrum |
| visual pollution | vitalism |
| viticulture | vitrification |
| viviparity | vivisection |
| vocalization | voice |
| volatalization | volatile |
| volcanic bomb | volcanic dust |
| volcanic eruption | volcanic gas |
| volcanic lake | volcanic sediment |
| volcano | volcanogenic deposits |
| volunteer plant | voucher specimen |
| vulcanization | vulnerable species |
| walking | wall pressure |
| wandering dune | war, environmental effect of |
| warm front | warm season plant |
| warner and preston study | warning colouration |
| warning label | warning signal |
| warping | wash |
| wasp | waste |
| waste anaesthetic gas | waste exchange |
| waste reduction | waste stream |
| waste treatment | waste water |
| waste water treatment | wasteland |
| wasteland development | wastewater discharge |
| wastewater reclamation | water act |
| water allocation | water budget |
| water cess act | water chemistry |
| water conservation | water cycle |
| water demand | water diversion |
| water environment | water erosion |
| water harvesting | water hyacinth |
| water injection | water inventory |
| water management | water pathway |
| water plants | water pollutant |
| water pollution control | water pollution in india |
| water potential | water quality standards |
| water reclamation | water resource |
| water right | water supply |
| water table | water table draw-down |
| water treatment | water vapour feedback |
| water wheel | water yield |
| water-borne disease | water-borne pathogens |
| water-power | waterholding capacity |
| waterlogged soil | waterlogging |
| watershed protection | waterspout |
| wateruse efficiency | wave |
| wave base | wave cyclone |
| wave land | wave period |
| wave power | wave size |
| wavelength | wax |
| weather | weather forecast |
| weather modification | weather report |
| weather satellite | weather station |
| weather symbol | weathering |
| weathering solution | weed |
| weismann’s doctrine | well irrigation |
| wells | westerlies |
| wet adiabatic instability | wet deposition |
| wet land | wet rot |
| wetland | wetlands |
| wetting agent | whaleback cloud |
| whaling | whirling psychometer |
| whirlwind | white spirit |
| whither wetlands | whorl |
| wide distribution | wild river |
| wild variety | wilderness |
| wilderness study area | wildfire |
| wildlife management | wildlife refuge |
| wildlife rehabilitation | wildlife sanctuary |
| wildtype gene | wilting |
| wilting point | wind energy |
| wind measurement | wind power |
| wind turbine | wind vane |
| wind variation | wind-chill |
| windmill | windpump |
| windrow | winds |
| wing | wing-tip vertices |
| winnowing | winter range |
| wise use movement | wood |
| wood fiber | wood pasture |
| wood pitch | world bank |
ஆசிரியர் குழு
பதிப்பகம் தமிழ் இணையப்பல்கலைக்கழகம் சென்னை
வெளியீடு தமிழக அரசின் கலைச்சொல்லாக்கக் குழு
பதிப்பாண்டு முதற்பதிப்பு - 2010
மின் பதிப்பாசிரியர் முனைவர் தமிழ்ப்பரிதி மாரி திட்ட முதன்மையர்
தமிழ்ப்பேழை இந்நூலின் உரிமை நிலை CC BY-SA
Publisher Tamil Virtual Academy
Chennai Published by Committee for Lexicon
of Terminologies Year of Publication 2010 Editor of ePublication Dr. Thamizhpparithi Maari Project Head Tamiḷ Pēḷai License of this book CC BY-SA
தமிழ்ப்பேழை இந்நூலின் உரிமை நிலை CC BY-SA
Publisher Tamil Virtual Academy
Chennai Published by Committee for Lexicon
of Terminologies Year of Publication 2010 Editor of ePublication Dr. Thamizhpparithi Maari Project Head Tamiḷ Pēḷai License of this book CC BY-SA