Ruben's crossword

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