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11 Cards in this Set
- Front
- Back
soil |
is the loose weathers ministerial earths surface |
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bedrock |
is the solid layer of rock beneath the soil |
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humus |
the decayed organic material in soil |
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fertility |
rich soil in the nutrients that plants need to grow |
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loam |
soil that is made up of about equal parts of clay sand and silt |
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pH scale |
measures substances |
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soil horizon |
is a layer of soil that differs in color |
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top soil |
a crumbly dark brown soil es a mixture of humus clay and other minerals |
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subsoil |
the b horizon |
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decomposers |
the orginism that break the remains of dead animals |