Across
- 5. removal of large forests
- 7. the surface of the atmosphere
- 9. all the water on earths surface
- 10. carbon dioxide and methane
- 12. steady increase of temperature on earth
Down
- 1. the circle of gases surrounding the earth
- 2. store carbon dioxide
- 3. how carbon is passed through the environment
- 4. 1 carbon and 2 oxygen molecules
- 6. the product is always water and carbon dioxide
- 8. absorb carbon dioxide
- 11. air is poisonous or harmful
- 13. state of the atmosphere in a day