| Cadmium (Cd) |
United States Environmental Protection Agency, Terms of Environment |
| Cap |
United States Environmental Protection Agency, Terms of Environment |
| Cap |
United Nations, Glossary of Environment Statistics |
| Cap Rock |
United Nations, Glossary of Environment Statistics |
| Capacity of Treatment Installation |
United Nations, Glossary of Environment Statistics |
| Capillary Action |
United States Environmental Protection Agency, Terms of Environment |
| Capital Accumulation (environmental accounting) |
United Nations, Glossary of Environment Statistics |
| Carbon Adsorption |
United States Environmental Protection Agency, Terms of Environment |
| Carbon Dioxide (CO2) |
United Nations, Glossary of Environment Statistics |
| Carbon Monoxide (CO) |
United States Environmental Protection Agency, Terms of Environment |
| Carbon Monoxide (CO) |
United Nations, Glossary of Environment Statistics |
| Carbon Tetrachloride (CC14) |
United States Environmental Protection Agency, Terms of Environment |
| Carboxyhemoglobin |
United States Environmental Protection Agency, Terms of Environment |
| Carcinogen |
United States Environmental Protection Agency, Terms of Environment |
| Carcinogen |
United Nations, Glossary of Environment Statistics |
| Carcinogenesis |
United Nations, Glossary of Environment Statistics |
| Carcinogenic or Carcinogen |
United States Environmental Protection Agency, Office of Compliance and Assurance |
| Carcinoma |
United Nations, Glossary of Environment Statistics |
| Carrying Capacity |
United States Environmental Protection Agency, Terms of Environment |
| Carrying Capacity |
United Nations, Glossary of Environment Statistics |
| Catalyst |
United States Environmental Protection Agency, Terms of Environment |
| Catalytic Converter |
United States Environmental Protection Agency, Terms of Environment |
| Catalytic Converter |
United Nations, Glossary of Environment Statistics |
| Channelization |
United States Environmental Protection Agency, Terms of Environment |
| Channelization |
United Nations, Glossary of Environment Statistics |
| Charcoal |
United Nations, Glossary of Environment Statistics |
| Check Irrigation |
United Nations, Glossary of Environment Statistics |
| Chemical Compound |
United States Environmental Protection Agency, Terms of Environment |
| Chemical Mutagens |
United Nations, Glossary of Environment Statistics |
| Chemical Oxygen Demand (COD) |
United States Environmental Protection Agency, Office of Compliance and Assurance |
| Chemical Oxygen Demand (COD) |
United States Environmental Protection Agency, Terms of Environment |
| Chemical Oxygen Demand (COD) |
United Nations, Glossary of Environment Statistics |
| Child Resistant Packaging (CRP) |
United States Environmental Protection Agency, Terms of Environment |
| Chlorinated Hydrocarbons |
United States Environmental Protection Agency, Terms of Environment |
| Chlorinated Hydrocarbons |
United Nations, Glossary of Environment Statistics |
| Chlorinated Solvent |
United States Environmental Protection Agency, Terms of Environment |
| Chlorination |
United States Environmental Protection Agency, Office of Compliance and Assurance |
| Chlorination |
United States Environmental Protection Agency, Terms of Environment |
| Chlorination |
United Nations, Glossary of Environment Statistics |
| Chlorine Loading |
United Nations, Glossary of Environment Statistics |
| Chloro-fluorocarbons (CFCs) |
United Nations, Glossary of Environment Statistics |
| Chlorofluorocarbons (CFCs) |
United States Environmental Protection Agency, Office of Compliance and Assurance |
| Chlorofluorocarbons (CFCs) |
United States Environmental Protection Agency, Terms of Environment |
| Chlorophenoxy |
United States Environmental Protection Agency, Terms of Environment |
| Cholera |
United Nations, Glossary of Environment Statistics |
| Cholinesterase |
United States Environmental Protection Agency, Terms of Environment |
| Chromium |
United States Environmental Protection Agency, Terms of Environment |
| Chromium |
United Nations, Glossary of Environment Statistics |
| Chronic Effect |
United States Environmental Protection Agency, Office of Compliance and Assurance |
| Chronic Effect |
United States Environmental Protection Agency, Terms of Environment |
| Chronic Exposure |
United States Environmental Protection Agency, Terms of Environment |
| Chronic Toxicity |
United States Environmental Protection Agency, Terms of Environment |
| Chronic Toxicity |
United Nations, Glossary of Environment Statistics |
| Classification of Environmental Protection Activities (CEPA) |
United Nations, Glossary of Environment Statistics |
| Clean Products |
United Nations, Glossary of Environment Statistics |
| Clean Technology |
United Nations, Glossary of Environment Statistics |
| Climate Change |
United States Environmental Protection Agency, Office of Compliance and Assurance |
| Climate Change |
United Nations, Glossary of Environment Statistics |
| Climate Change (also referred to as 'global climate change') |
United States Environmental Protection Agency, Terms of Environment |
| Climax System |
United Nations, Glossary of Environment Statistics |
| Climosequence |
United Nations, Glossary of Environment Statistics |
| Cloning |
United States Environmental Protection Agency, Office of Compliance and Assurance |
| Cloning |
United States Environmental Protection Agency, Terms of Environment |
| Closed Ecological System |
United Nations, Glossary of Environment Statistics |
| Cloud Forest |
United Nations, Glossary of Environment Statistics |
| Coastal Lagoons |
United Nations, Glossary of Environment Statistics |
| Coastal Protection |
United Nations, Glossary of Environment Statistics |
| Coastal Zone |
United States Environmental Protection Agency, Terms of Environment |
| Coastal Zone |
United Nations, Glossary of Environment Statistics |
| Coffin |
United Nations, Glossary of Environment Statistics |
| Coke Oven |
United States Environmental Protection Agency, Terms of Environment |
| Coke Oven Emissions |
United Nations, Glossary of Environment Statistics |
| Coliform Index |
United States Environmental Protection Agency, Terms of Environment |
| Coliform Index |
United Nations, Glossary of Environment Statistics |
| Coliform Organism |
United States Environmental Protection Agency, Terms of Environment |
| Coliform Organism |
United Nations, Glossary of Environment Statistics |
| Colloids |
United States Environmental Protection Agency, Terms of Environment |
| Combined Sewer |
United Nations, Glossary of Environment Statistics |
| Combined Sewers |
United States Environmental Protection Agency, Terms of Environment |
| Command-and-Control Policy |
United Nations, Glossary of Environment Statistics |
| Command-and-Control Regulations |
United States Environmental Protection Agency, Terms of Environment |
| Compaction |
United States Environmental Protection Agency, Terms of Environment |
| Compaction |
United Nations, Glossary of Environment Statistics |
| Comparative Risk Assessment |
United States Environmental Protection Agency, Terms of Environment |
| Compost |
United States Environmental Protection Agency, Office of Compliance and Assurance |
| Compost |
United States Environmental Protection Agency, Terms of Environment |
| Compost |
United Nations, Glossary of Environment Statistics |
| Composting |
United States Environmental Protection Agency, Terms of Environment |
| Composting |
United Nations, Glossary of Environment Statistics |
| Compressed Natural Gas (CNG) |
United States Environmental Protection Agency, Terms of Environment |
| Concentration |
United States Environmental Protection Agency, Terms of Environment |
| Condensate |
United States Environmental Protection Agency, Terms of Environment |
| Conditioning of Radioactive Wastes |
United Nations, Glossary of Environment Statistics |
| Conductance |
United States Environmental Protection Agency, Terms of Environment |
| Conductivity |
United States Environmental Protection Agency, Terms of Environment |
| Conservation |
United States Environmental Protection Agency, Office of Compliance and Assurance |
| Conservation |
United States Environmental Protection Agency, Terms of Environment |
| Conservation |
United Nations, Glossary of Environment Statistics |
| Contact Pesticide |
United Nations, Glossary of Environment Statistics |
| Containment |
United Nations, Glossary of Environment Statistics |
| Contaminant |
United States Environmental Protection Agency, Terms of Environment |
| Contaminant |
United Nations, Glossary of Environment Statistics |
| Contingent Valuation |
United Nations, Glossary of Environment Statistics |
| Controlled Environmental Housing (in agriculture) |
United Nations, Glossary of Environment Statistics |
| Conventional Pollutants |
United States Environmental Protection Agency, Terms of Environment |
| Cooling Tower |
United States Environmental Protection Agency, Terms of Environment |
| Cooling Tower |
United Nations, Glossary of Environment Statistics |
| Corrosion |
United States Environmental Protection Agency, Terms of Environment |
| Corrosion |
United Nations, Glossary of Environment Statistics |
| Corrosive |
United States Environmental Protection Agency, Office of Compliance and Assurance |
| Cost-Benefit Analysis |
United Nations, Glossary of Environment Statistics |
| Cost/Benefit Analysis |
United States Environmental Protection Agency, Terms of Environment |
| Cradle-to-Grave or Manifest System |
United States Environmental Protection Agency, Terms of Environment |
| Creaming |
United Nations, Glossary of Environment Statistics |
| Criteria |
United States Environmental Protection Agency, Terms of Environment |
| Criteria Pollutants |
United States Environmental Protection Agency, Terms of Environment |
| Critical Load |
United Nations, Glossary of Environment Statistics |
| Crop Rotation |
United States Environmental Protection Agency, Terms of Environment |
| Crop Rotation |
United Nations, Glossary of Environment Statistics |
| Cryptosporidium |
United States Environmental Protection Agency, Terms of Environment |
| Cumulative Ecological Risk Assessment |
United States Environmental Protection Agency, Terms of Environment |
| Cumulative Exposure |
United States Environmental Protection Agency, Terms of Environment |
