Across
- 2. Unhealthy elements in the air we breathe (two words).
- 4. Unhealthy and impure water supply (two words)
- 5. A violent, whirling wind accompanied by a funnel-shaped cloud
- 8. A cyclone with winds exceeding 74 mph and usually covering a large area
Down
- 1. Excessive environmental noise from planes, autos, industry etc. (two words)
- 3. A large quantity of water overflowing onto what is normally dry land.
- 6. A chemical change accompanied by the emission of heat, light and flames
- 7. Armed conflict between nations\