| A | B |
|---|
| pollution | an unwanted change in the environment caused by substances or forms of energy |
| pollutant | anything that causes pollution |
| hazardous waste | waste that can catch fire, corrode, explode or make people sick |
| renewable resource | a natural resource that can be replaced at the same rate at which it is used |
| nonrenewable resource | resource that forms at a slower rate than the rate at which it is consumed |
| exotic species | an organism that makes a home for itself outside of its native home |
| overpopulation | the presence of too many individualos in an area for the available resources |
| habitat | where an organism lives |
| biodiversity | the number and variety of organisms in a given area in a specific period of time |
| deforestation | the clearing of forest lands |
| point-source pollution | pollution that comes from one source |
| non-source pollution | pollution that comes from many kinds of sources |
| conservation | the preservation and wise use of natural resources |
| biodegradable | items that can be broken down by living organisms |
| recycling | the recovery of valuable or useful materials from waste or scrap |
| resource recovery | using garbage to make electricity |
| Endangered Species Act | a law that forbids activities that would harm animals on a wspecial list; requires the development of a recovery program |
| Environmental Protection Agency (EPA) | government organization that protects the environment |
| The three R's | Reduce, reuse, recycle |
| who sings the 3 R's song | Jack Johnson |
