Across
- 4. any individual living thing
- 5. bottom soil layer, solid rock
- 7. a pure, solid substance found in nature
- 9. a type of rock formed from intense heat and pressure
- 10. to change from a liquid to solid by lowering its temperature
- 12. never alive and never will be
- 13. to change from a solid to a liquid by raising its temperature
- 14. what soil provides for plants
- 15. soil layer made of weathered down rock
Down
- 1. soil layer full of humus, animal waste, sand, silt, clay, broken down rocks & minerals, air, insects, organisms, water, fungi, and plant roots
- 2. the breaking down of rocks and minerals
- 3. a type of rock formed by compaction and cementation
- 6. what plants need to survive
- 8. a type of rock formed from the cooling of magma or lava
- 11. sediment being carried from one place to another