| A | B |
|---|
| Loam | Best topsoil for growing plants because it is a mixture of sand, clay, silt and humus, so water drains well. |
| Humus | Rotted plant and animal parts which make the soil brown and crumbly. |
| Nutrients | Soil is important to plans because it gives them _______? |
| Sand | The largest bits of rock, which makes it very visible. |
| Soil | Made up of rock particles, water, air and rotten plants. |
| Bedrock | The third layer below the subsoil, which is solid rock. |
| Clay | Smallest bits of rock found in topsoil. |
| Silt | Larger than claym which makes it feel coarse, found mostly in river beds. |
| Weathering | The changing of the Earth's surface by water, wind and living things. |
| Rock | One of the five main components of soil, common types include: sand, silt, and clay. |
| Erosion | The movement of weathered materials |
| Subsoil | The second layer of soil, which is mostly rock bits and some nutrients. |
| Topsoil | The top layer of soil formed by humus and the smallest bits of rock. |
