Across
- 2. a area that keeps air in
- 5. a area creatures live
- 9. from organic matter
- 11. able to live in
- 12. the surroundings
- 14. thrown junk
- 15. to dirty the air
- 17. how much stuff is being produced
- 19. to keep safe
Down
- 1. a place trash goes
- 3. science about living matter
- 4. a layer around the earth
- 6. able to use again
- 7. a group of animals that intercact
- 8. keep intact for long periods
- 10. to recycle food
- 13. to reuse
- 16. a creature goes away
- 18. related to sun