Grayson Shinn apes crossword

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Across
  1. 4. Plants get this from air to photosynthesize
  2. 6. small particle size a lot of water retention
  3. 9. Rock is physically broken apart by wind and rain
  4. 11. Medium particle size some water retention
  5. 12. The process of rock breakdown
  6. 14. Subsoil, 3rd layer of soil
  7. 15. Worst ecological disaster in us history
  8. 19. Bedrock
  9. 20. Parent material, rock that has not undergone much wheathering
Down
  1. 1. humus, non decomposed plant material 1st soil layer
  2. 2. Water retained deep underground
  3. 3. Process of turning soil to mix nutrients
  4. 5. Water and minerals in rock react with oxygen to change the compostion of rock
  5. 7. Shows layers of soil beneath the service
  6. 8. Large particle size no water retention
  7. 10. Topsoil, 2nd layer of soil
  8. 13. partially decomposed plant material top layer of soil
  9. 16. plants get nutrients from this
  10. 17. System for determining what kind of soil is present based on silt, sand, and clay composition
  11. 18. Good soil/good mixture of silt,sand, and clay