Across
- 1. nonrenewable source of energy
- 4. animals/plants that could no longer exist
- 6. a long period with little or no rain
- 7. A type of rain that is caused by air pollution
- 8. The process of cutting down the forests
Down
- 2. a layer in the stratosphere that protects humans from the suns harmful rays
- 3. A change in global climate patterns
- 5. caused by cars or factories hurt the air