Across
- 5. Energy from moving air
- 7. The layer that protects Earth from sun
- 9. Waste that breaks down naturally
- 10. Protecting nature and resources
Down
- 1. Harmful gases in the air
- 2. Dirty water is called water
- 3. Using things in a way that lasts long
- 4. Gas that causes global warming
- 6. Cutting down too many trees is called
- 8. Type of energy from water