Across
- 4. Panels see them on roofs of houses
- 6. starts on fire
- 10. a lot
- 11. rain that is polluted
- 13. good thing
- 14. uses water to create energy
- 15. rock
Down
- 1. the opposite of renewable
- 2. gas from corn fermentation
- 3. where nuclear energy is produced
- 5. rots
- 7. oil
- 8. converts wind energy into electricity
- 9. breaking apart
- 12. free source