Across
- 3. Influx of acidic water that causes a rapid change in the water's pH
- 4. Short term effect of air pollution regarding the chest
- 10. Ultra rays of the sun cause emissions from cars, trucks + other sources reacting to oxygen
- 12. Put directly into the air by human activity.
- 13. harmful substance in the air to unhealthy levels
Down
- 1. primary pollutants react with other primary pollutants or naturally occurring substances
- 2. Several minerals that form in long thin fibers(Strength + resistance)
- 5. Air pollution that occurs indoors
- 6. Long term effect of air pollution regarding cancer.
- 7. When air pollution hangs over urban areas
- 8. Units the intensity, sound is measured in
- 9. The act passed in 1970 to regulate vehicle emission in the US
- 11. Precipitation that contains high concentration of acid