Across
- 6. chemical formula for carbon dioxide
- 7. gases in the atmosphere that absorb infared radiation
- 8. chemical symbol for water vapor
- 9. greenhouse gases banned in 1978
- 12. greenhouse gas emitted naturally by wetlands
- 14. atmosphere layer with ozone layer
- 17. number of greenhouse gases
- 18. the rising of global temperatures
- 19. when burnt these create carbon dioxide
- 20. greenhouse gases only emitted by humans
- 22. greenhouse gas that comes from ozone in the troposphere
- 23. where weather happens
Down
- 1. the cutting down of trees that releases carbon dioxide
- 2. when greenhouse gases keep too much heat in
- 3. second most abundant gas in the atmosphere
- 4. most abundant gas in the atmosphere
- 5. lights that occur naturally in the thermosphere
- 9. primary greenhouse gas emitted by humans
- 10. percent of oxygen in the atmosphere
- 11. earth's coldest layer
- 13. earth's outer layer
- 15. solar radiation can be reflected back to ___
- 16. the process of gases trapping solar energy in earth
- 17. percent of nitrogen in the atmosphere
- 21. type of radiation greenhouse gases absorb