Soil and Minerals

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Across
  1. 3. process that forms soil
  2. 5. the best soil for agricultural crop yield
  3. 6. urban soil conservation methods
  4. 8. this mineral is found in DNA & ATP & teeth
  5. 11. besides water name a mineral that cycles
  6. 14. used in building plant cell wall & exoskeleton of animals
  7. 16. Calcium is not absorbed by
  8. 17. this mineral forms fossil fuels like coal,oil,natural gas
  9. 18. surface area one reason clay is good for soil
  10. 19. an urban soil conservation methods
  11. 21. acidic soil is caused by ______ _____ use that produces rain
Down
  1. 1. name a process that forms soil
  2. 2. results of of BOD and DO
  3. 4. this mineral is not a gas, cylcles very slowly
  4. 7. another agricultural soil conservation method
  5. 9. created by heavy rain and leads to the problem of soil erosion
  6. 10. an agricultural soil conservation methods
  7. 12. layer of soil where organic debris is decomposed and minerals are returned to the soil
  8. 13. mineral that cycles with the help of bacteria
  9. 15. the loss of topsoil by wind or water
  10. 20. A mixture of organic humus and inorganic sand,silt,clay,minerals and water