Unit 1: A Green Future

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Across
  1. 1. global warming cause a ______ in sea levels.
  2. 3. a thick cover of ice over an area
  3. 5. important or necessary
  4. 6. a synonym for disappear
  5. 8. easily harmed
  6. 10. safe
  7. 12. evil or cruel
  8. 13. a big, furry, dangerous animal that lives in the arctic
Down
  1. 1. something that you can use more than once
  2. 2. to become liquid
  3. 3. cannot be defeated
  4. 4. The ice caps in the arctic are _______.
  5. 7. a safe place
  6. 9. if you _____ the amount of trash you use, you will help the planet.
  7. 11. a fossil fuel that is black, liquid, and comes from the ground.