Earth Day

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Across
  1. 1. Maintain an original state
  2. 3. Energy from the sun
  3. 5. Production of gas or radiation
  4. 9. contaminating water or air with harmful chemicals
  5. 11. the conditions that an animal lives in
  6. 13. A animals or insects or persons natural living place
  7. 14. Dropping trash to the ground
  8. 15. Biology that deals with living organisms
  9. 19. To reuse a used item (like plastic
  10. 20. How the environment and the animals interact with each other
Down
  1. 2. A species that is no longer living
  2. 4. A reusable material
  3. 6. able to be maintained at a certain rate or level
  4. 7. Creating a higher product than its original state
  5. 8. Recycling organic materials for fertilizer
  6. 10. well-engineered and managed facilities for the disposal of solid waste
  7. 12. The gasses surrounding the earth
  8. 16. Colorless unstable toxic gas
  9. 17. protecting an environment from destruction
  10. 18. Made from growing or living materials