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| the process that breakes down rock and other substances at Earths surface. |
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| the movement fo rock particles by wind, water, ice, and gravity. |
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mechanical weathering
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| the type of weathering in which rock is physicaly btocken into smaller pieces. |
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| they grinding away of rock by rock particles carried by water,ice, wind, or gravity |
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| wedges of ice in rocks widen asd deepen cracks |
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| the process that breaks down rock through chemical changes |
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| means that a meterial is full og tiny connected air spacec that allow water to seep through it |
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| means that a meterial is full og tiny connected air spacec that allow water to seep through it |
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| is the loose weathered material on earths surface in which plants can grow |
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| is the solid layer of rock beneath the soil |
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| a dark-colored substance that forms as plant and animal remains decay |
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| is a layer of aoil that differs in color and texture from the layers above of below it |
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| usually consist of clay and other particles wash down from the A horizon but little humus |
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| as plants shed leaves they form a loose layer |
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| the organisms that break the remains of dead organisms into smaller pieces and digest them with chemicals |
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| one that is naturally replaced in a relatively short time |
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| the thick mass of tough roots at teh surface of the soil kept the soil in place and held onto moisture |
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| was an area were wind erosion caoused severe loss of topsoil during the 1930s |
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| the management of soil to pervent its destruction |
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| the practice of plowing fields along the curves of a slope |
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| desturbs the soil and its pland cover as little as possible |
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| soil that is made of about equal parts of clay sand and silt |
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| the A horizon of humus clay and other minerals |
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