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Earth Resources-C25-2

Hunter Cartrette

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Across
2.Land becomes desert
5.Things the earth provides that humans use everyday
7.material left after the ore is extracted
9.Substances that can affect humans health and other organisms
11.Resources that are used and can be used again and again
12.Harmful substances that are in the air
Down
1.resource that exist in a fixed amount in various places in Earths crust and can be replaced only by geological,physical, and chemical process that take hundreds of millions of years
3.The replacement of renewable resources at the same rate at which they are consumed
4.mixture of gravel
6.natural resource that can be mined at a profit;
8.Process in removing salt from salt water to have fresh water
10.deeper soil layer lies on a base of unweathered parent rock

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