Nonrenewable energy

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Across
  1. 3. renewable and nonrenewable resources
  2. 4. fracking dangers are not completely understood
  3. 5. Very easy to transport
  4. 7. spills can cause environmental disasters
  5. 8. used for heating most homes
  6. 9. can't be replaced in our lifetime
Down
  1. 1. radioactive waste can be dangerous to the environment if mishandled
  2. 2. the coal is very hard to mine
  3. 6. the oil can be relatively cheap