Carbon & Nitrogen Cycle Puzzle

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Across
  1. 1. Burnining fossil fuels will release CO2 into the...
  2. 4. Element of Life
  3. 6. Gas that causes Ocean Acidification
  4. 8. Fuel created from dead plants and animals
  5. 11. Plants take up fixed _________ as nutrients
  6. 12. Shell of a Sea Urchin
  7. 13. Carbon Fixation
  8. 14. Byproduct of Photosynthesis
Down
  1. 2. Ocean Acidification leaves ________(ions) in the water
  2. 3. Plants taking up fixed Nitrogen from the soil
  3. 5. Deification and Decomposition re introduce Nitrogen into the Soil
  4. 7. Process to get cellular energy from food
  5. 9. When an element is combined with something else so it can be used by living organisms
  6. 10. Way to fix Nitrogen