| A | B |
|---|
| HUMUS | Decayed plant &animal remains |
| SUBSOIL | Soil layer made of clay & particles |
| DECOMPOSERS | Organisms that break down organic waste. |
| BEDROCK | Layer of rock beneath the soil |
| TOPSOIL | Dark brown soil mix of humus,clay&minerals. |
| LOAM | Soil from clay sand and silt. |
| SOIL HORIZON | soil layer that differs from the layers around it. |
| SOIL | the surface material in which plants can grow |
| LITTER | Leaves or other plant material on top of the soil. |
| Silt | A soil particle intermediate in size between clay and sand. Any particle between 0.002 and 0.05 millimeters in diameter. |
| Sand | A granular material that results from the weathering of rock. |
| Clay | Soil particles that come from rock and have diameters smaller than 0.005 millimeter. |
