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5 Cards in this Set
- Front
- Back
parent material
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the mineral matter from which the soil developed.
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humus
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the dark colored part of the soil that is rich in nutrients.
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horizons
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the layersin a cross section of soil.
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topsoil
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the topmost layer of soil, which is dark coloured and roch in humus.
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erosion
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movememt of rock and mineral grains frome one place to another.
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