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Weathering and Soil Formation

Mrs. Weimer

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3.the removal and transport of material by wind, water or ice.
6.loose mixture of small mineral fragments and organic material
7.the grinding and wearing down of rock into new substances
10.process by which water flows into cracks in rock and expands as it freezes
13.the breakdown of rock into smaller pieces
14.the main reason farmers use crop rotation is to slow down the process of
17.rock that is the source of soil
19.very small particles of decayed plant and animal material in soil
20.the acid that is normally involved in the formation of caves
21.breakdown of rock by physical means
1.when farmers plow across the slope instead of up and down a hill
2.soft, less weather resistant rocks wear away
4.chemical reaction which an element combines with oxygen to form an oxide
5.a process farmers use to change a steep field into a series of smaller flat fields
8.chemical breakdown of rock into new substances
9.various methods by which humans take care of the soil
11.process that rainwater dissolves and carries away minerals and soil
12.precipitation that contains acid due to air pollution
15.the top layer of soil that generally contains humus
16.rust is produced by the oxidation of this mineral
18.layer of rock beneath the soil

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