Nutrients Cycle

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Across
  1. 2. too much CO2 in the atmosphere may be responsible for the _________ effect.
  2. 5. animals and ______ cannot directly use the nitrogen in our atmosphere.
  3. 6. _______ is within each cycle
  4. 9. _______ are chemicals substances that an organism needs to live.
  5. 10. phosphorus is contained of ______ and minerals.
  6. 12. _________ bacteria breaks down ammonia into a gaseous form.
  7. 15. phosphorus, water, nitrogen, and ________.
  8. 17. photosynthesis is used to make _______ and oxygen.
  9. 18. source of phosphorus in water comes from man-made ______.
  10. 19. 6CO2 + 6H20 -> C6H12O6 + 6O2.
Down
  1. 1. _______ is not found in the free state of nature.
  2. 3. too much phosphorus in water leads to plant _______.
  3. 4. animals use O2 in the process of _____ to make CO2
  4. 7. main regulator of CO2.
  5. 8. every organism needs nutrients to survive.
  6. 11. higher organism use nitrogen to make their _______.
  7. 12. animals waste ______ because of bacteria.
  8. 13. ______ eat plants containing nitrogen.
  9. 14. our atmosphere is 78% _______ gas.
  10. 16. _________ bacteria can directly use nitrogen in the atmosphere.