Across
- 3. found in stratosphere
- 4. occurs in cities
- 7. commuter cars produce
- 11. high vapor pressure
- 13. kills 50% of test subjects
- 14. carbon produced=carbon consumed
- 15. caused by reaction with primary
Down
- 1. caused by factories uphill
- 2. methane is a
- 5. caused by humans
- 6. destroy ozone
- 8. burning coal creates
- 9. Forests are an example of
- 10. form of air pollution
- 12. surface reflective properties
- 14. average weather patterns