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5 Cards in this Set
- Front
- Back
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fossil fuel
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nonrenewable energy resources that form in the Earth's crust over millions of years
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greenhouse effect
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the natural heating process of a planet, such as Earth, in which gases in the atmosphere trap heat
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inexhaustible
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in such large supply that it is considered almost limitless
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nonrenewable
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cannot be replaced or can be replaced only over thousands or millions of years
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renewable
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can be used over and over or has an unlimited supply
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