Earth Day Crossword

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Across
  1. 3. Reuse discarded objects to create a product of higher quality
  2. 6. contaminate (water, air, or a place) with harmful substances
  3. 8. something sent forth by emitting
  4. 9. natural home or environment of an animal
  5. 10. Maintain something in it's original or existing state
Down
  1. 1. the envelope of gases surrounding the earth
  2. 2. a colorless unstable toxic gas
  3. 4. decayed organic material used for plant fertilizer
  4. 5. biological community of interacting organisms
  5. 7. Trash such as paper, cans, plastic bottles, that is left in a public place