Across
- 5. capable of being decomposed by bacteria or organisms
- 7. garbage dump
- 8. to maintain to its original state
- 10. relating to the sun
- 11. to contaminate with harmful poisonous substance
- 14. able to be maintained at a certain level
- 16. synthetic material that takes a long time to degrade
- 17. trash on the sidewalk
- 20. decayed organic material
- 21. rescue and recover
- 22. reuse
Down
- 1. to protect from harm or destruction
- 2. the act of clearing a wide area of trees
- 3. solid surface of earth, not submerged in water
- 4. no longer in existence
- 6. production and discharge of something
- 9. layers of gases surrounding earth
- 11. relating to a planet
- 12. where an animal lives
- 13. a stock or supply of materials
- 14. upper layer of earth where plants grow
- 15. capable of being renewed
- 18. convert into usable material
- 19. food produced without the use of chemical fertilizers or pesticides