Across
- 3. largest particle size
- 4. partially decomposed plants & animals
- 7. humus layer
- 9. movement & filtering of water as it moves through soil
- 11. layer of rock
- 12. intermediate size
- 13. parent material layer
- 15. physical breakdown of rock
- 18. bedrock layer
Down
- 1. greatest ecological disaster in US
- 2. subsoil layer
- 5. bedrock from which the soil was formed
- 6. molecular nature of rock is changed
- 8. topsoil layer
- 10. process of loosening and mixing soil
- 12. plants gather energy by absorbing ____
- 14. smallest particle size
- 15. _____ is obtained from 2 sources
- 16. part of plant that absorbs nutrients & water from soil
- 17. forms as rock undergoes the process of weathering