Across
- 2. area of cold air around Earth's poles
- 6. stop
- 8. corrosive
- 10. CO2
- 11. what people breathe
- 13. to move from one place to another
- 14. when you give up something
- 15. when you keep something the way it is
Down
- 1. mass chopping down of trees
- 3. government program for renewable energy
- 4. able to continue/keep up
- 5. to work together
- 7. Nelson The senator that created Earth Day
- 9. to motivate or encourage
- 12. gas/coal/petroleum