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Earth Resources-C25-2

Tessa D.

Earth Resources-C25-2

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Across
3.the resources the earth provides
4.unweathered, solid parent rock that may consist of limestone, marble, granite, or other quarried rocks.
7.natural resources that it is possible to use indefinitely without causing a reduction in the available supply.
9.a natural resource that can be mined at a profit.
10.substances that can be adversely affect the survival, health, or other activities or organisms.
11.a mixture of gravel,sand, and crushed stone that naturally accumulates on or close to earth's surface.
12.the material left after the ore is extracted.
Down
1.the replacement of renewable resources at the same rate at which they are consumed. (2 Words)
2.a resource that exists in a fixed amount of various places in Earth;s crust and can be replaced only by geological, physical, and chemical processes that take hundreds of millions of years.
5.the process whereby productive land becomes desert.
6.the process of removing salt from ocean water to provide freshwater.
8.occurs when air contains harmful levels of pollution

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