Across
- 5. principal CO2 deliver
- 7. typhoon on a green house effect
- 10. principal vegetables
- 11. Global warming
- 12. CO2 in ocean
- 15. part of so many plants
Down
- 1. material of a greenhouse
- 2. second principal natural disaster
- 3. forest principal natural disaster
- 4. between atmosphere and earth
- 6. air
- 8. can plant more trees?
- 9. Keep it cooler
- 13. Carbon dioxide
- 14. big stellar star