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soil formations
| Term | Definition |
|---|---|
| soil horizon | soil layers are called horizon. |
| soil | mixture of mixed particles. |
| litter | leaves dead material grass |
| topsoil | lots of humus. minerals worms/decomposers organic matter nitrogen |
| subsoil | clay some humus mineral |
| weathered rock | little weathering |
| bed rock | unweathered rock seidment |