Across
- 2. difference in elevation
- 4. management of soil
- 8. chemical changes to earth
- 9. the measure of how plants are growing
- 10. a process that splits rocks in half
- 12. soil loss because of erosion
- 13. plant diffrent crops evry year in the same places
- 15. A ______ weathering that's shows rocks being broken down
- 19. dark colored soil
- 20. rocks grinding away
- 21. the hardest layer of earth
- 22. the process with wind and water
- 23. layer of soil that differs in color or texture
- 25. A ______ weathering that rocks go threw chemical changes
- 27. so plants can grow outside or inside
- 28. rich fertile soil
- 29. the level below topsoil
Down
- 1. connects points of elevation
- 2. dead crops are left on the ground to hold new crops in place
- 3. material that is full of tiny
- 5. curves in the earth to prevent loss of soil
- 6. thick mass
- 7. chemical change of a substance
- 11. contour line labeled with elevation
- 14. changes in earths past
- 16. the level of earth that is filled with dead plants and stems
- 17. A ______ map that shows surface features
- 18. earth is made up of ____ _____
- 24. breaks down remains of organisms
- 26. the highest level of soil