Across
- 6. surroundings of people/animals
- 7. to reuse something that has been thrown away
- 9. converting organic material
- 10. to reuse something and make it of higher quality items
- 12. being able to hold its place
- 14. branch of biology
- 16. a layer in earth's stratosphere at an altitude of about 6.2 miles high
- 17. D.E.A.D.
- 18. what you shouldn't do with your trash
- 19. something that is reusable
Down
- 1. no chemicals at all
- 2. to maintain something in its original state
- 3. layer of gas extending from the earth's surface
- 4. place where garbage is dumped
- 5. what cars do to the air
- 6. the product of something
- 8. biological community
- 11. to protect something from harm or destruction
- 13. _____ Power
- 15. where animals live