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Earth Resources-C25-2

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Across
1.The replacement of renewable resources at the same rate at which they are consumed. (2 Words)
7.Material left after the ore is extracted.
8.Resources that are possible to use indefinitely without causing a reduction in the available supply. (2 Words)
10.A mixture of gravel, sand, and crushed stone that naturally accumulates on or close to Earth's surface.
11.Occurs when saltwater is distilled.
12.Pollutants in air occur in quantities that become harmful to human health and the health of the environment. (2 Words)
Down
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. (2 Words)
3.Deeper soil lies on a base of unweathered parent rock.
4.The process whereby productive land becomes desert.
5.Resources that Earth provides. (2 Words)
6.Substances that can adversely affect the survival, health, or activities of organisms.
9.Natural resource that can be mined at a profit.

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