Earth

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Across
  1. 2. the planet is heating up
  2. 4. clean energy that uses the wind
  3. 5. Dangerous
  4. 7. to keep something safe
  5. 8. too many people in one area
  6. 10. to grow or expand
  7. 12. sharing one car
  8. 14. to end something
Down
  1. 1. the science of the enviorment
  2. 3. describes something that's good for the planet
  3. 4. They work in gov.(fem.)
  4. 6. Outer...(where astronauts go)
  5. 9. not allowed
  6. 11. paper,plastic,cans etc.
  7. 13. something you can fall into