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Earth Resources - C25 - 2

Collin R

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Across
4.Resources that it is possible to use indefinitely without causing a reduction in the available supply.
6.Resources that Earth provides.
8.The material left after the ore is extracted.
9.A natural resource that can be mined at a profit.
10.Occurs when air contains harmful levels of pollutants.
11.Unweathered, solid parent rock that may consist of limestone, marble, granite, or other quarried rock.
12.The replacement of renewable resources at the same rate at which they are consumed.
Down
1.Process that removes salt from ocean water in order 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, or chemical processes.
3.The process whereby productive land becomes desert.
5.Substances that can adversely, affect the survival, health, or activities of organisms.
7.A mixture of gravel, sand, or crushed stone that naturally accumulates on or close to Earth's surface.

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