Energy Sources
Across
- 5. example: methane
- 6. a little breezy
- 9. carbon-emitting resources
- 11. gone forever
- 12. can be replenished
Down
- 1. really underground energy
- 2. decayed plants
- 3. refined oil
- 4. goes with the flow
- 7. Chernobyl energy
- 8. naughty list stocking stuffer
- 10. ray of sunshine