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04 Natural Resources
| Question | Answer |
|---|---|
| natural resources | materials in the environment that are useful to people |
| source | the point at which something begins |
| renewable resource | resources that nature produces again and again |
| nonrenewable resource | resources that nature cannot replace quickly enough to meet people's needs |
| inexhaustible resource | Resources that humans can use and never use up such as solar energy and wind |
| energy | the ability to do work |
| pollution | anything in the environment that can harm living things or damage natural resources |
| acid rain | rain that contains unhealthy amounts of acid |
| fossil fuels | fuels that formed from decayed remains of ancient plants and animals |