Nutrient Cycles

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Across
  1. 4. which nutrient/element do animals/humans produce as waste
  2. 6. humans are hurting the nutrient cycle and the earth by doing this
  3. 8. animals/humans put CO2 in the atmosphere through this process
  4. 10. evaporation of water off of a plant
  5. 11. controls gas exchange in plants
  6. 13. burning these type of fuels puts CO2 in the air
Down
  1. 1. which nutrient/element is crucial for animals/humans
  2. 2. these type of organisms convert nitrogen into a usable form for plants
  3. 3. these type of organisms REMOVE CO2 from the air and make O2
  4. 5. we need nitrogen to make this
  5. 7. decomposers put carbon into the soil by breaking down ____ organisms
  6. 9. plants absorb nitrogen through the ______
  7. 12. these type of organisms need to eat plants in order to get nitrogen