Across
- 2. caused by pollutants near the ground
- 3. federal agency that regulates pollution
- 6. mixture of smoke and fog
- 8. absorb solar radiation in the atmosphere
- 9. worldwide rise in temperature
- 10. volcanic ash and forest fire debris are examples
Down
- 1. destruction of the upper atmosphere
- 4. how clean the atmosphere is
- 5. harmful precipitation
- 7. solar radiation trapped in the atmosphere