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