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Soil
Term | Definition |
---|---|
Litter | Layers of dead leaves and grass on top of the soil. |
Topsoil | An upper layer of soil consisting of rock fragments, organisms, nutrients, water, air and decaying matter. |
Subsoil | Layer of soil below topsoil. |
Bedrock | Rock that makes up Earth's crust. |
Erosion | The process by which water, wind, or ice, moves particles of rock or soil. |