Across
- 2. the rock formation that is the source of mineral fragments in the soil (somewhat weathered rock)
- 3. horizontal layers that reveal a soil's history, characteristics, and usefulness
- 5. Rock that makes up Earth's crust; also the solid rock layer beneath the soil
- 7. Rich, fertile soil that is made up of about equal parts of clay, sand, and
- 8. a crumbly, dark brown soil that is a mixture of humus, clay, and other minerals
Down
- 1. The layer of soil beneath the topsoil that contains mostly clay and other minerals.
- 2. A soil's ability to allow water through.
- 4. material formed from decaying leaves and other organic matter
- 6. The amount of air pockets in between soil particles.