Earth Day

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Across
  1. 2. To protect and keep safe in its original state
  2. 6. Plants grow from this
  3. 7. Keep in good condition
  4. 9. Layer of gases between Earth and space
  5. 10. Our surroundings
  6. 12. Help out or serve others in a selfless way
  7. 14. An object that can decompose naturally
  8. 16. type of habitat with lots of rain, usually in tropical areas
  9. 17. Use again
Down
  1. 1. An "effect" where heat is trapped due to ozone
  2. 3. Make something new out of something old
  3. 4. Place where plants and animals live
  4. 5. To use less so there is some in the future
  5. 8. introduction of harmful materials into the environment
  6. 11. Type of species that needs protection
  7. 13. to return something to an earlier state
  8. 15. Name of our planet