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Earth Resources- C25- 2

Marissa Tryon

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Across
4.When pollutants in air occur in quantities that become harmful to human health and the environment. (2 Words)
6.A solid rock that consist limestone, granite, marble, or other rocks.
8.Trees are Example of.
9.Substances that can adversely affect the survival, health or activities or organisms.
10.Replacing something at the same rate its being consumed.
11.The process whereby Productive land becomes desert.
12.Removing salt from ocean water to provide freshwater.
Down
1.This is something Earth Provides known as.
2.A resource that exists in a fixed amount.
3.A mixture of gravel, sand, and crushed stone that naturally accumulates on or near Earths surface
5.May release harmful chemical into groundwater or surface water.
7.Is a natural resource that can be mined.

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