Earth Day

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Across
  1. 2. Likes to chase mice
  2. 3. Man's best friend
  3. 5. To make something impure
  4. 8. Capable of being renewed
  5. 9. The whole mass of air surrounding the earth
  6. 10. Large marsupial
Down
  1. 1. An area built up by landfill
  2. 4. Flying mammal
  3. 6. Has a trunk
  4. 7. Surroundings