Soil Crossword

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Across
  1. 4. When there was a drought
  2. 6. 02
  3. 9. Decomposed plants and animals
  4. 10. Last layer of soil
  5. 12. Fourth layer of soil
  6. 13. Smallest particle
  7. 14. Intermediate particle
  8. 19. Second layer of soil
  9. 20. wind, water, cold, hot
Down
  1. 1. Animals that are alive
  2. 2. Name of triangle
  3. 3. How soil forms
  4. 5. Layers of soil
  5. 7. Top Layer of soil
  6. 8. Molecular reactions
  7. 11. Plowing
  8. 15. Third layer of soil
  9. 16. Largest particle
  10. 17. H20
  11. 18. Mixture of humus and rock particles