Soil Crossword Puzzle

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Across
  1. 4. variations of _____ can cause different types of soil
  2. 9. layer of soil that is different from soil above/below it
  3. 10. has greatest effect on soil
  4. 11. found in the drier western US in areas that have grass and bushes
  5. 12. produces regolith
Down
  1. 1. mostly made up of rock pieces
  2. 2. soil _______ is a tiny fraction of all Earth materials, yet a vital resource.
  3. 3. C horizon is made up of weathered _______
  4. 5. forms in areas that receive more than 63 cm of rain each year
  5. 6. forms in hot, wet tropical areas.
  6. 7. mixture of rock particles, minerals, decayed organic materials
  7. 8. mixture of humus and tiny rock pieces
  8. 9. decayed remains of organisms