Across
- 3. rust
- 4. difference from one contour line to another
- 6. natural
- 9. soil manage
- 12. water wind ice
- 13. organism break down
- 14. plain soil loss 1930's
- 15. chemical
- 16. layer under
- 18. split
- 19. equal clay sand silt
- 21. coal
- 23. elevation slope
- 27. connects points
- 29. grass mass
- 30. full of tiny
Down
- 1. soil we'll growth
- 2. same
- 5. heavier contour
- 7. dead stalks make soil better
- 8. lose dead plants
- 10. soil color
- 11. the loose
- 17. chemical and physical breakdown
- 20. grinding wind ice
- 22. plowing curves
- 24. dark organic
- 25. different crops
- 26. color change under
- 28. humus clay other