Plant Agriculture: Nick

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Across
  1. 2. caused by over tilling of soil
  2. 5. intermediate particle size
  3. 9. physical breakdown by wind water cold and heat
  4. 11. largest partial sizes
  5. 14. what plants gather energy from
  6. 17. Subsoil, tiny rocks that leach from topsoil
  7. 18. Partially decomposed plant and animal matter
  8. 19. mixture of humus rocks water and air
  9. 20. topsoil, organic matter and weathered rock
Down
  1. 1. classification of soil based on amount of specific particles
  2. 3. loosens and mixes soil
  3. 4. breakdown due to chemical reactions with water, oxygen,ect
  4. 6. smallest particle size
  5. 7. process of water flowing through rocks
  6. 8. The place that plants obtain CO2 from
  7. 10. Humus, un-decomposed soil layer
  8. 12. Bedrock, unweathered solid rocks
  9. 13. Parent material rocks undergone little weathering
  10. 15. ideal for farming
  11. 16. The soil in the A-Horizon