Carbon Nitrogen Cycle

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Across
  1. 4. Space SIX
  2. 10. Space A
  3. 11. Space B
  4. 12. Space TWO
Down
  1. 1. Space G
  2. 2. Space I
  3. 3. Space ONE
  4. 5. Space FIVE
  5. 6. Space D
  6. 7. Space FOUR
  7. 8. Space H
  8. 9. Space THREE