Across
- 2. remains of ancient organisms burned for energy (2 words)
- 5. controversial way of extracting gas and oil from shale (slang)
- 7. distilled plant fuel
- 8. network for delivering electricity from producers to consumers
- 9. energy from Earth’s internal heat
- 11. popular location for residential sun power panel
- 12. energy that comes from sources we can’t run out of
Down
- 1. device that harnesses wind power
- 3. sun power
- 4. coolest environmental competition around
- 6. local source of hydropower (2 words)
- 10. primary gas in natural gas