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| a resource that can be replaced by natural processes |
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| a resource thar cannot be replenished by natural processes |
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| using renewable resources at a rate that does not deplete them |
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| wearing away of surface by water and wind |
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| reduction of soil's ability to retain nutrients and water |
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| the removal of a large number of trees from a forest |
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| nonrenewable resource; minerals required for a variery of human products |
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| can be broken down and recycled by decomposers |
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| protective shield around earth |
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