Across
- 2. the layer of soil beneath the topsoil
- 4. to allow air to reach the soil
- 7. small, loose stones used in construction
- 8. small, many-legged creatures that live in soil
- 9. the building of structures like houses or roads
Down
- 1. the solid rock layer beneath soil
- 2. particles of soil or rock carried by water or wind
- 3. small, rounded stones
- 5. the land along the edge of a river
- 6. laid down or settled in a place by water, wind, or ice
- 8. soft, wet soil
- 10. a naturally solid mineral material