| A | B |
| Carbon footprint | the total amount of greenhouse gases released by a person, family, building, organization, or company each year. |
| Pollutant | a sstance that contaminates the air or water. |
| Particulate Matter | Solid or liquid particles suspended in air. Also known as Particulates; Particles. |
| Nonpoint source pollution | pollution that enters water from a large area and cannot be traced to a single location |
| Point source pollution | pollution that enters water from a specific location and can be controlled or treated before it enters a body of water |
| Primary Pollutant | A polluting compound that comes directly out of a smokestack, exhaust pipe, or natural emission source. |
| Secondary Pollutant | A primary pollutant that has undergone transformation in the presence of sunlight, water, oxygen, or other compounds. |
| Global Warming | the heating of Earth's surface due to human activities, primarily fossil fuel burning |