| A | B |
|---|
| crust | the outer layer of the earth |
| mantle | the middle layer of the earth |
| core | the center part of the earth |
| decay | to slowly break down or rot |
| humus | the decayed matter in the soil |
| nutrients | a material that plants and animals need to live and grow |
| clay | soil with tightly packed soil with tiny grains-many nutrients |
| sand | soil with loose soil, large grains- has few nutrients |
| loam | soil with a mixture of clay, sand, and humus |
| silt | very fine particles, such as dirt or sand, that are often found at the bottom of a body of water( such as a pond or river) |
| soil | loose part of the ground in which plants grow |
