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| is the movement of rock particles by wind, water, ice, or gravity. |
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| is the soil layer of rock beneth the soil |
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| the thick mass of tough roots at the surface of the soil kept the soil in place and held onto moisture |
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| refers to the grinding away of rock by rock particles carried away by water, ice,wind, or graveity |
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| is the process that breaks down rock and others substance at earths surface. |
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| the type of weathering in wich rock is physically broken into smaller pieces |
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| wedges of ice in rocks widen and deepen cracks |
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| is the process that breaks down rock through chemical changes |
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| means that a meterial is full of tiny, connected air spaces that allow water to seep through it. |
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| is the loose weathered material on earths surface in wich plants can grow |
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| is a dark colored substance that forms as plants and animals remains decay |
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| is a layer of soil that differs in color and texture form the layers above or below it |
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| a crumbly, dark brown soil that is a mixture of humus, clay, and other minerals |
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| usually consists of clay and other particles washed down from the a horizon |
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| as plants shed leaves, they form a loose layer |
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| are the organisims that break the remains of dead organisnms into smaller pieces and digest them with chemicals |
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| is one that is naturally replaced in a relaatively short time |
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| was an area where wind erosion caused severe loss of top soil |
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| is the management of soil to prevent its destruction |
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| is the pracitce fo plowing fields along the curves of a slop |
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| distrubs the soil and its plant cover as little as possible |
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| soil that is made up of about equal parts of clay, sand, and silt |
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| What factors causes mechanical weathering |
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| describe three causes of chemical weathering |
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