Chapter 2g

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Across
  1. 5. layer that is made of mostly clay and other minerals
  2. 6. plowing the edges of slopes to prevent soil loss
  3. 10. hard rock underneath the soil
  4. 11. wares away physically
  5. 16. organism that breaks down soil
  6. 17. thick mass of grass roots and soil
  7. 18. line that shows levels of elevation
  8. 23. layer of dead plants, leaves, and soil
  9. 26. layer that is what plants get planted in
  10. 27. method of farming to keep switching crops to keep soil fertile
  11. 28. geological principle that uses the same geological process as before
  12. 29. characteristic of a mineral that has tiny holes in it
Down
  1. 1. cause of potholes
  2. 2. organic material
  3. 3. loose material that plants grow in
  4. 4. Great Plains area in the 1930s when wind caused soil loss
  5. 6. line that shows increasion from one line to another
  6. 7. breaks down ricks at Earths surface
  7. 8. management to prevent soil destruction
  8. 9. anything natural that humans use
  9. 12. method to leave crops in to hold soil in place
  10. 13. chemically breaks down rocks
  11. 14. heavy line that shows round units
  12. 15. measure of how the soil supports the plant
  13. 19. ice, water, wind, or gravity moves weathered rock or soil
  14. 20. map that shows surface features
  15. 21. chemical change when oxygen and other substances combine
  16. 22. grinding away by ice and water
  17. 24. soil that is equally made up by clay, silt, and sand
  18. 25. layer of soil that differs in color and texture from the layers around it