Across
- 3. Are human made chemicals that are used and produced in the
- 5. of paints, refrigerants, etc
- 7. Mixture of liquid droplets and solid particles found in the air
Down
- 1. Colorless and odorless gas formed by the burning of gasoline
- 2. A toxic gas formed in the air after many sulfur fossil fuels have been burned
- 4. Occurs both at ground level and in upper atmosphere
- 6. A poisonous gas emitted from cars, trucks, etc.
- 8. Environmental Protection Agency A government agency that is tasked with
- 9. protection matters