Let's Go Green!

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Across
  1. 2. material made from trees
  2. 7. energy from moving air
  3. 8. energy from the sun
  4. 10. harmful substances
  5. 11. plants, animals, and the Earth
  6. 12. dirty air from cars or fires
  7. 13. use old things again
Down
  1. 1. dirty air, water, or land
  2. 3. use less of something
  3. 4. use something more than one time
  4. 5. man-made material that pollutes
  5. 6. hard, clear material for bottles
  6. 7. things we throw away
  7. 9. power we use