Biology

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Across
  1. 8. living
  2. 9. gas into water
  3. 12. process of plant’s food production
  4. 13. oxygen and nitrogen
  5. 14. organic nitrogen into ammonia
Down
  1. 1. breaking down of food
  2. 2. 0.03% in atmosphere
  3. 3. non-living
  4. 4. dealing water molecules through stomata
  5. 5. warming of earth
  6. 6. breathe
  7. 7. rain
  8. 10. ammonia into nitrites
  9. 11. water into gas