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Environment / Energy
| Question | Answer |
|---|---|
| Material from the environment that people use that can be replaced relatively quickly. | Renewable resources |
| Material from the environment that people use that cannot be replaced. | Nonrenewable resources |
| An energy source that cannot be used up. | Inexhaustible resources |
| A fuel formed from the decay of ancient forms of life. | Fossil fuels |
| A source of energy other than burning fossil fuels. | Alternative energy source |
| Energy contained in the nucleus of an atom. | Nuclear energy |
| Electric energy generated by running water. | Hydroelectricity |
| Heat from below the earth's surface. | Geothermal energy |