Across
- 2. the study of the environment.
- 5. to get water around lots of places is to.
- 7. when people cut down forest for materials.
- 11. a place with lots of trees and is very damp.
- 14. to keep a repetitive process in action.
- 15. the many layers of air that surround earth.
Down
- 1. think of a cars exhaust pipe.
- 3. one layer of the atmosphere keeps U.V out.
- 4. the action of conserving something.
- 6. like a forest,city or place on earth.
- 8. other forms of life such as fungi
- 9. different places on earth have different temperatures.
- 10. a place to grow plants at high temperatures.
- 12. plant life occurring in a particular region or time,
- 13. what happens to a glass bottle after you use it.