Earth Day Puzzle by Arsema and Alara

12345678910111213141516171819
Across
  1. 6. the natural world, as a whole or in a particular geographical area, especially as affected by human activity
  2. 7. convert (waste) into reusable material
  3. 9. decayed organic material used as a plant fertilizer
  4. 10. reuse (discarded objects or material) in such a way as to create a product of higher quality or value than the original
  5. 12. able to be maintained at a certain rate or level
  6. 14. the branch of biology that deals with the relations of organisms to one another and to their physical surroundings
  7. 16. a colorless unstable toxic gas with a pungent odor and powerful oxidizing properties
  8. 17. having no living members; no longer in existence
  9. 18. trash.
  10. 19. capable of being renewed
Down
  1. 1. healthy foods
  2. 2. maintain (something) in its original or existing state
  3. 3. surrounds the globe
  4. 4. a place to dispose of refuse and other waste material by burying it and covering it over with soil, especially as a method of filling in or extending usable land
  5. 5. contaminate (water, air, or a place) with harmful or poisonous substances
  6. 6. fossil fuels; pollution
  7. 8. a biological community of interacting organisms and their physical environment
  8. 11. protect (something, especially an environmentally or culturally important place or thing) from harm or destruction
  9. 13. relating to or determined by the sun
  10. 15. where an animal lives