biogeochemicals

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Across
  1. 5. rain
  2. 6. vapor
  3. 10. a chemical
  4. 11. cycle
  5. 12. a cycle
  6. 13. natural gas
  7. 15. evaporation
  8. 16. an element
  9. 17. cycle
Down
  1. 1. water on the surface
  2. 2. converting nitrogen compounds
  3. 3. hot and wet
  4. 4. bacteria in soil
  5. 7. what you breathe
  6. 8. at night its wet in summer
  7. 9. cycle
  8. 14. water in the ground