Chapter 2

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Across
  1. 3. the top layer of soil
  2. 4. how we'll soil supports growth
  3. 5. dark organic material in soil
  4. 8. the movement of weathered rock
  5. 9. change of set contour lines
  6. 10. the way earth has changed over time
  7. 12. lines on a topographic map
  8. 13. planting different crops each year to increase fertility rate of the soil
  9. 15. fertile soil
  10. 16. the process of rock removal with chemicals
  11. 18. In the Great Plains in 1930's the _______caused soil soil
  12. 19. where crops are left to hold soil in place
  13. 22. layer of dead organic material
  14. 23. I dug in the ____ to find worms.
  15. 24. the layers of different soil
  16. 26. process that breaks down rock
  17. 27. the heavier contour lines
  18. 28. thawing and freezing of water I between two rocks
  19. 29. the solid layer of rock under earths surface
Down
  1. 1. Worms are a type of _____.
  2. 2. a change when substances rusts
  3. 3. map that uses line to show elevations
  4. 6. plowing on the curves to prevent soil loss
  5. 7. physical weathering
  6. 11. mostly clay soil that is under the topsoil
  7. 14. tiny holes where water is able to seep through
  8. 17. preserving soil
  9. 20. anything in nature that humans use
  10. 21. when rock particles change the shape of a rock over time
  11. 25. thick mass of roots and soil