Across
- 5. dead animals
- 9. a layer of rock
- 10. how well plants grow in it
- 11. moves rock
- 12. any thing humans use that are from nature
- 13. plowing fields
- 15. physical was rock breaks
- 17. rocks splitting from water
- 19. small minerals
- 21. prevent soil from destruction
- 22. the surface that makes plants grow
- 23. bigger elevation
- 24. rocks chemically breaking
- 27. different layers of soil
- 29. rich soil
- 30. when you plant new plants in the same soil
Down
- 1. when wind erodes rocks
- 2. the middle layer of soil
- 3. rocks grinding on on another
- 4. the space between contour lines
- 6. fact that prove what rock it is
- 7. top layer of dirt
- 8. grass and roots
- 14. any thing that decomposes
- 16. when you use dead stalks
- 18. the lines on a topographic map
- 20. dead plants or leaves
- 25. a proses that breaks rocks
- 26. a map that shows elevation
- 28. the proses that makes iron rust