Make Earth Green Again

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Across
  1. 2. cars that are eco friendly
  2. 4. bad gasses for earth
  3. 6. large buildings killing earth
  4. 8. smoke from factories
  5. 9. using old items to make new ones
Down
  1. 1. inhale carbon dioxide
  2. 3. your effect on earth
  3. 5. home planet
  4. 7. branch of science studying organisms