Across
- 3. Using resources in a way that protects them so they be used in the future
- 5. Warming The increase in Earth's temperature over time
- 7. catch or killing too many animals so they Pollution cannot recover
- 8. Something people usefrom nature to survive.
Down
- 1. When more cities,causing cities to grow larger
- 2. The cutting down of a large area of trees and forests.
- 4. Harmful substances that make air, water or dirty land
- 6. gases released into the air, often from vehicles
- 7. A layer of gas in eath's atmosphere that protects living things from suns Harmful rays