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Soil Formation
6.2 Vocabulary Review
| Question | Answer |
|---|---|
| soil | the loose, weathered material on Earth's surface in which plants can grow |
| bedrock | the solid layer of rock beneath the soil |
| humus | dark-colored, decayed organic material in soil |
| fertility | a measure of how well soil supports plant growth |
| loam | rich, fertile soil that is made up of about equal parts of clay, sand, and silt |
| soil horizon | the layer of soil that differs in color and texture from the layers above or below it |
| topsoil | mixture of humus, clay, and other minerals that forms the crumbly, topmost layer of soil |
| subsoil | the layer of soil beneath the topsoil that contains mostly clay and other minerals |
| litter | the loose layer of dead plant leaves and stems on the surface of the soil |
| decomposer | soil organism that breaks down the remains of organism and digests them |
Created by:
anorris
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