Across
- 2. reusing stuff that is trash
- 5. the production and discharge of something, especially gas or radiation.
- 6. a layer in the atmosphere
- 7. above the sky is the
- 12. place trash goes
- 13. sun
- 14. bigger than a habitat
- 16. bigger than environment
- 19. fresh and nutrients full
Down
- 1. to keep something for a long time
- 3. type of dirt
- 4. signs and cops tell you not to do this
- 5. study of the earth
- 8. lower than the environment
- 9. not here anymore
- 10. car factories and cows do this to the air
- 11. to protect something
- 15. a resource that can be used and reproduced fast
- 17. to withstand something
- 18. one of the 3 rs that you need to do