Aaron Soilless Oasis

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Across
  1. 3. converts nitrogen in the air to ammonium
  2. 9. the process in which organisms convert light energy into chemical energy
  3. 10. the practice of farming
  4. 12. bacteria change ammonium to nitrates to be absorbed by plants
  5. 13. ______ solution contains essential elements required by the plant
  6. 14. plants absorb nitrates by the roots
  7. 15. where one organism benefits at the expense of another organism
Down
  1. 1. growing plants using a water-based nutrient solution rather than soil,
  2. 2. one species benefits from the relationship while the other species is neither harmed or benefits from the relationship
  3. 4. growing plants in a fish tank using the fishes feces as water
  4. 5. nitrogen in the soil gets back into the air
  5. 6. an organelle that contains the photosynthetic pigment chlorophyll
  6. 7. growing plants in an air or mist environment
  7. 8. a chemical or natural substance added to soil to increase its fertility.
  8. 11. decomposers change nitrogen into ammonium to re-enter the cycle