Soil Review

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Across
  1. 4. The smallest soil particle
  2. 6. Mixture of mineral particles and organic matter that covers Earth's surface
  3. 8. Soil layers formed over time with distinct characteristics
  4. 9. Soil texture with medium-sized particles
  5. 12. Time, climate, and topography are examples of soil _______ factors
  6. 13. The breakdown of organic matter into simpler forms in soil
  7. 17. Decayed organic matter that helps soil retain moisture and nutrients
  8. 18. The process by which water and wind remove topsoil
  9. 19. Process where water moves through soil
Down
  1. 1. Essential elements like nitrogen and phosphorus found in fertile soil
  2. 2. Process that reduces pore space and decreases permeability
  3. 3. Topsoil horizon rich in organic material
  4. 4. Factor of soil formation related to rainfall and temperature
  5. 5. A vertical section of soil that shows all its horizons
  6. 7. Plant remains, dead animals, and decomposed materials are found in this horizon
  7. 10. Factor of soil formation that includes animals, fungi, and bacteria
  8. 11. This soil particle is the largest in size
  9. 14. This gas is needed by plant roots for respiration
  10. 15. Soil-forming factor that refers to the original material from which soil develops
  11. 16. Arrangement of sand, silt, and clay particles