| A | B |
|---|
| pollution | an unwanted change in the environment caused by substances or forms of energy |
| renewable resource | a natural resource that can be replaced at the same rate at which the resource is consumed |
| nonrenewable resource | a resource that forms at a rate that is much slower than the rate at which it is consumed |
| overpopulation | the presence of too many individuals in an area for the available resources |
| biodiversity | the number and variety of organisms in a given area during a specific period of time |
| pollutant | anything that causes pollution |
| nonpoint-source pollution | pollution that comes from many different sources |
| radioactive wastes | hazardous wastes that give off radiation |
| exotic species | an organism that makes a home for itself in a new place outside its native home |
| habitat | where an organism lives |
| deforestation | the clearing of forest lands |
| point-source pollution | pollution that comes from one source |
| hazardous waste | wastes that can catch fire, corrode, or eat through metal, explode, or make people sick |
