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