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Definition
| any useful material from Earth |
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Definition
| the wise use of natural resources |
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Definition
| a mixture of weathered rock and humus |
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Definition
| reddish or yellowish layer made up largely of clay particles that have been weathered out of the rock below |
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Definition
| solid material made up of one or more minerals |
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Definition
| a natural solid that has a definite chemical makeup |
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Definition
| rock that can be mined for the minerals it contains |
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Definition
| a resource that can be replaced |
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Definition
| a natural resource that can't be replaced |
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