Carbon & Nitrogen Cycles

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Across
  1. 5. there are three types of these that allow the nitrogen cycle to function
  2. 7. the chemical reaction that animals use to release carbon dioxide into the atmosphere
  3. 9. the element needed to create protein and DNA
  4. 10. the chemical reaction that removes carbon dioxide from the atmosphere
  5. 11. the process of converting ammonia into nitrate
  6. 13. the process of converting nitrogen gas into ammonia
Down
  1. 1. carbon dioxide is an example of this
  2. 2. this process results in less trees available to remove carbon dioxide from the atmosphere
  3. 3. a large concentrated supply of a nutrient
  4. 4. the nitrogen cycle occurs here
  5. 6. the process of converting nitrate back into nitrogen gas
  6. 8. the breaking down of dead plants and animals
  7. 12. considered the backbone of all living things