Across
- 3. the process by which rocks break down
- 5. formed from weathered rocks
- 9. type of igneous rock
- 10. things that make up the soil
- 12. decomposed organic materials
- 13. one layer of the earth
- 14. break down to form soil
Down
- 1. was once another type of rock
- 2. reveals different layers of soil
- 4. type of metamorphic rock
- 6. type of sedimentary rock
- 7. rocks formed from cooled magma or lava
- 8. uppermost layer of the earth's crust
- 11. can prove that air is in the soil