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6 Cards in this Set
- Front
- Back
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drought
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a long period of dry weather
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endangered organism
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a kind of living thing of which very few exist and that someday might not be found on the earth
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extinct organism
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a kind of living thing that is no longer found on the earth
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fossil
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the hardened parts or marks left by an animal or plant that lived long ago
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pollution
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anything harmful added to the air, water, or land
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recycle
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to change something so it can be used again
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