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13 Cards in this Set
- Front
- Back
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Soil can form because of... |
Plants and animals, and weathering |
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Soil consists of layers called... |
Horizons |
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Soil can lose value because of... |
Loss of fertility, and erosion of topsoil |
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Soil can be different... |
Types |
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Types are classified according to... |
Climate, plants, and soil composition |
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Plants and animals produce... |
Organic matter |
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Organic matter becomes... |
Humus |
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Weathering produces... |
Small rocks and minerals |
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Weathering includes types... |
Chemical weathering, and mechanical weathering |
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Horizons include... |
A horizon, B horizon, and C horizon
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Loss of fertility is called... |
Exhaustion |
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Loss of fertility can be restored by planting... |
Legumes |
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Erosion of topsoil can be reduced by using... |
Contour plowing, and conservation plowing. |
