Across
- 5. pH of acid rain
- 7. Long term effect of air pollution
- 8. Where most air pollution comes from
- 9. Air pollution that hangs over cities
- 11. Gas most responsible for the greenhouse effect (2 words)
- 13. Solar radiation warms the Earth's surface (2 words)
- 14. Short term effect of air pollution
- 15. Occurs when acid suddenly enters a lake or stream and changes the pH (2 words)
- 20. Pollutants put directly into the air by human activity.
Down
- 1. Precipitation that contains a high concentration of acids (2 words)
- 2. Gradual increase in global temp. due to greenhouse gases (2 words)
- 3. Place where the ozone holes are occurring.
- 4. Can damage genetic material (2 words)
- 6. International treaty with the goal of reducing CO2 emissions (2 words)
- 10. Absorb some solar energy and radiate it back to Earth (2words)
- 12. A molecule of three oxygen atoms that absorbs most UV light
- 16. May be more polluted than indoors
- 17. Pollutants that form when coming into contact with another primary pollutant
- 18. Human made chemicals that are damaging the ozone layer.
- 19. Type of pollution that wastes energy