Nutrients and soil profile

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Across
  1. 4. The ____ is the most essential organ of a plant for the uptake of nutrients
  2. 7. Nitrogen, phosphorus, and potassium together are called _____nutrients
  3. 8. Clay, Sand, and silt are all examples of these(hint:2 words)
  4. 9. What horizon is in the humus
  5. 10. What is applied to soil to counter acid rain
  6. 12. What is expelled into soil after plants die
  7. 13. Which horizon is between Regolith and subsoil
  8. 14. How many soil horizons are there
Down
  1. 1. The science/study of nutrients
  2. 2. Sulfur, Magnesium,and calcium together are called ____ nutrients
  3. 3. What is the 2nd deepest layer of soil
  4. 5. What makes soil dark at the top
  5. 6. Where does leaching occur
  6. 11. What layer of soil determines the color of the soil
  7. 13. What is the top soil layer