Environment - Soil & Wildlife

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Across
  1. 1. The A horizon is also called this
  2. 3. Surface irrigation where water sits in low rows between crops
  3. 4. Component of soil triangle that is best for growing vegetables
  4. 7. Mechanical forces caused by temperature change
  5. 10. Soil amendment composed of nitrogen, phosphorus, and potassium
  6. 11. Where an organism lives
  7. 14. Community and its nonliving surroundings
  8. 18. In this type of land conservation practice, farmers work with the land features
  9. 19. A low soil pH can be raised by adding this
  10. 20. The R horizon is made up of this material
  11. 24. A high soil pH can be decreased by adding this
  12. 25. Preparing and working the soil
  13. 28. Type and amount of nutrients in the soil (no spaces)
  14. 31. Material used to control weeds, keep soil moist and conserve soil
  15. 32. Type of fertilizer that includes animal manure and compost made with plant/animal products
  16. 34. Irrigation needs are greatest during this phase of corn production
  17. 35. Number of Land Capability Classes
  18. 36. Group of like organisms that live together
  19. 38. Populations that live together
  20. 40. Component of soil triangle with the largest texture
  21. 42. Preferred method of fertilizer application for homeowners
Down
  1. 2. One organism feeds on another without killing it
  2. 5. Type of plant capable of nitrogen fixation
  3. 6. One animal kills and eats another
  4. 8. Measurement of irrigation (no spaces or hyphens)
  5. 9. Proportion and size of particles
  6. 12. Land Capability Class with the least restrictions
  7. 13. The B horizon is also known as this
  8. 15. Plants use this type of water in soil
  9. 16. Two animals fight each other for resources
  10. 17. A plant or animal lives on, in or near another sharing food without harming the other
  11. 21. The Earth's top layer
  12. 22. The wearing away of soil
  13. 23. Two organisms live together and both benefit
  14. 26. What an organism does (its job)
  15. 27. This land conservation practice looks like flattened steps on a hill
  16. 29. Component of soil triangle with the smallest texture
  17. 30. The C horizon contains this type of material
  18. 33. Drip irrigation is the best method for this
  19. 35. Government agency that monitors groundwater quality and enforces pollution laws
  20. 37. Most important wildlife management area
  21. 39. Government agency that provides landowners advice and assistance with soil and water
  22. 41. Land Capability Class that has severe restrictions, but can still be cultivated if managed correctly