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section 3 part 1
science
| Term | Definition |
|---|---|
| Natural selection | Anything in the environment that is used by people. |
| Renewable resources | Are either always available or are naturally replaced in a relatively shot time. |
| nonrenewable | Natural resource that are not replaced in a useful time frame. |
| pollution | The contamination of earth's land, water or air |
| environment science | Is the study of natural processes in the environment and how humans can affect them. |