Across
- 2. plants that grow on dead things
- 4. everything that is alive in an area
- 7. large flat area with no trees
- 8. area covered in water
- 9. study of animals
- 10. get rid of all the trees
- 12. the air that surrounds earth
Down
- 1. to use without extinction
- 3. area covered in trees and bushes
- 5. protection of animals and plants
- 6. plants and sunlight causes this
- 11. study of plants