Protect the Earth

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Across
  1. 2. a material comes from trees
  2. 3. a material not easily goes away
  3. 5. don't use too much
  4. 6. do let people get hurt
Down
  1. 1. use too much
  2. 2. The 70% of Earth is it.
  3. 3. a large paper that you can draw or write on it
  4. 4. cars need it to move