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Earth Resources

Greer C

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Across
4.it is possible to use indefinitely without causing a reduction in the the available supply
5.the resources Earth provides
6.mau release harmful chemicals into ground water or sulfate water
8.pollutants of the air
10.natural resource that can be mined at a profit
11.solid rock, and it may consist of limestone, granite, marble, or other rocks.
12.the replacement of renewable resources at the same rate at which they are consumed
Down
1.removing salt from ocean water to provide freshwater
2.a resource that exists in a fixed amount in various places in Earth's crust and can be replaced only by geological, physical, and chemical processes that take hundreds of millions of years.
3.process where by productive land becomes desert.
7.a mix of gravel, sand, and crushed stone
9.substances that can affect, survival, health, or activities of organisms

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