| Term | Definition |
|---|
| natural resource | any natural substance, organism, or energy form that living things use |
| renewable resource | a natural resource that can be used and replaced over a relatively short time |
| nonrenewable resource | a natural resource that cannot be replaced or that can be replaced only over thousands or millions of years |
| recycling | the process by which used or discarded material are treated for reuse |
| nuclear energy | the form of energy associated with the changes in the nucleus of an atom, an alternative energy resource |
| solar energy | energy from the sun |
| wind energy | energy in wind |
| hydroelectric energy | electricity produced by falling water |
| biomass | organic matter, such as plants, wood, and waste, that contains stored energy |
| gasohol | a mixture of gasoline and alcohol |
| geothermal energy | energy from within the Earth |
Combine with other sets
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