Across
- 3. the bottom layer, weather happens here
- 5. comes from trees
- 6. 21% of our atmosphere
- 9. 4th layer, hottest layer
- 11. also known as CFCs
- 14. 2nd layer, ozone found here
- 15. 3rd layer, meteors burn up
Down
- 1. a layer of gases that surround the earth
- 2. boundary between stratosphere and mesosphere
- 4. boundary between troposphere and stratosphere
- 7. 78% of our atmosphere
- 8. boundary between mesosphere and thermosphere
- 10. also known as o3
- 12. lights in the sky occurring at thermosphere
- 13. the weight of the air above