Across
- 4. Synthetic greenhouse gases
- 6. Most dense layer of the atmosphere
- 9. The most common greenhouse gas
- 11. Trapping gases in the atmosphere
- 16. How plants create oxygen
- 17. Makes up 21% of atmospheric gases
- 18. A greenhouse gas also known as natural gas
- 21. The gradual heating of earth's surface
- 22. Gas from agricultural/industrial activity
- 23. Greenhouse gas caused by human activity
- 24. Made to be like something
- 25. Absorbs most of the harmful radiation
Down
- 1. Plants absorbing CO2
- 2. Largest source of greenhouse gas emissions
- 3. How long a substance stays in a system
- 5. Most abundant gas in the atmosphere
- 7. Human activity that offsets greenhouse gases
- 8. Gases that destroy the ozone layer
- 10. Includes the ozone layer
- 12. Heat transfer through electromagnetic waves
- 13. Gas released into the atmosphere
- 14. Cause of CO2 emissions
- 15. Above the stratosphere
- 19. Emit pollutants that harm the atmosphere
- 20. Has four layers that have gases