| A | B |
|---|
| Pollution | Change in the environment for the worse. |
| Hazardous waste | Waste that can cause death or serious damage to human health. |
| Radioactive waste | Waste that is produced by the production of nuclear energy. |
| Sanitary landfill | A solid waste dump in which garbage is compacted and covered with soil. |
| Temperature inversion | The phenomenon that occurs when a layer or cool air containing pollutants are trapped under a layer of warm air. |
| Smog | A thick brownish haze that forms when hydrocarbons, carbon dioxide and other gases react in sunlight. |
| Acid rain | Precipitation that is more acidic than normal. |
| Thermal pollution | Increase in water temperature when 'used' water from nuclear power plants is discharged back into lakes and rivers. |
| Conservation | Wise use of natural resources so that they will last longer. |
| Scrubbers | Pollution-control devices that reduce emissions from factory smokestacks. |
| Emissions | Gases and other particles that are given off when fossil fuels are burned. |
| Catalytic converter | Emission control device that changes the gases in automobile exhaust into carbon dioxide and water vapor. |
| Recycling | Reclaiming discarded materials that can be used again. |
| Eutrophication | The release of inorganic nutrients from human sources into the water. |
| point source | Specific point(s) from which waste is dischage. |
| nonpoint source | Water pollution is from various sources. |
