Earth Day Crossword Puzzle

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Across
  1. 3. is a huge piece of a rock we live on
  2. 5. is something you want to save and remake
  3. 7. is something that makes our planet earth dirty
Down
  1. 1. is something we take care of, or mind about
  2. 2. is a useful device to use for work
  3. 4. is home,environment,and surroundings
  4. 6. is something called global warming