earth day

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Across
  1. 1. the month earth day is
  2. 4. envelope of gases surrounding earth
  3. 6. natural world as a whole
  4. 7. the star around which the earth orbits
  5. 8. panel absorb the sun's rays as a source of energy
  6. 11. discarded matter
  7. 13. use again
  8. 15. the weather condition we live in
  9. 16. the layer on earth that protects use from the radition
  10. 17. all organisms that grow or live wild in an area without being introduced by humans
Down
  1. 2. trash in a public place
  2. 3. we take care of them and water them
  3. 5. biological community of interacting organisms
  4. 9. a place to dispose of refuse and other waste material
  5. 10. what the earth is mostly made of
  6. 12. use again or more than once
  7. 14. not used