Across
- 5. long term heating of Earth's climate system
- 7. a period of exceptionally hot weather
- 8. liquid particles suspended in air
Down
- 1. a gas that contributes to the greenhouse effect by absorbing radiation
- 2. contamination of an indoor or outdoor environment
- 3. air pollution that reduces visibility
- 4. main source of air pollution
- 6. another name for corn