Across
- 4. the sun
- 6. powered by Earth's core
- 8. organic material.
- 9. the Hoover dam
- 11. a non-renewable resource that you burn for energy
- 12. uses fusion to boil water to turn a fan.
Down
- 1. a resource that will eventually run out.
- 2. a gas fossil fuel
- 3. its a liquid fossil fuel
- 5. its a solid fossil fuel
- 7. windmills make this
- 10. a infinite or abundant resource