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| is the process that breaks down rock and other substances at Earth's surface. |
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| is the movement of rock particles by wind, water, ice or gravity. |
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| Mechanical weathering or Physical weathering |
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| the type of weathering in which rock is physically broken into smaller pieces |
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| refers to the grinding away of rock by rock particles carried by water, ice, wind, or gravity |
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| wedges of ice in rocks widen and deepen cracks |
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| is the process that breaks down rock though chemical changes |
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| means that a matierial is full of tiny, connected air spaces that allowwater to seep through it |
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| is loose weathered material on earth's surface in which plants can grow |
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| us the solid layer of rock beneath the soil |
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| is a dark-colored substance that forms as plant and animal remains decay |
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| soil that is made up of about equal parts of clay,sand,and silt |
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| is the layer of soil that differs in color and texture from the layers above or below it |
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| a crumbly,dark brown soil that is a mixture of humus,clay and and other minerals |
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| usually consits of clay and other particles washed 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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| are the organisms that break down the remains of dead organisms into smaller pieces and digest them with chemicals |
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| the thick mass of tough roots at the surface of the soil |
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| is one thatis naturally replaced in a relativly short time |
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| was an area where wind erosion caused severe loss of topsoil during the 1930s |
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| is the management of soil to prevent its destruction |
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| is the practice of plowing fields along curves of a slope |
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Definition
| disturbs the soil and its plant cover as little as possible |
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