The Nitrogen Cycle

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Across
  1. 2. part of the earth that is rich in nitrogen and where plants grow
  2. 3. Nitrogen is taken from the atmosphere and converted into other compounds useful for other processes, returning to the cycle
  3. 6. the process where fungi and prokaryotes decompose dead tissue and release Nitrogen back into the cycle as ammonia
  4. 8. compounds that contain nitrogen that plants absorb from the soil
  5. 9. The place on a plant’s roots where where bacteria live and produce ammonia (NH3) that the plant absorbs
  6. 11. Zone of the Earth containing all gases found within the air
  7. 12. the process where nitrate is converted into Nitrogen and Oxygen
Down
  1. 1. Organisms that convert atmospheric Nitrogen into usable forms for plants, such as ammonia
  2. 4. the building blocks of life that contain nitrogen and phosphorus, also known as proteins
  3. 5. organisms that break dead plants and animals, bringing Nitrogen into the soil
  4. 7. Zone of the Earth containing all of Earth’s rocks and minerals
  5. 10. when discharged electricity naturally converts nitrogen gas in the atmosphere into compounds plants can use