Across
- 3. Powered by the Sun
- 5. Could take years to get it back
- 8. Organic matter used as a fuel
- 11. Internal heat from the Earth's crust
- 12. Can be remade or found again
Down
- 1. Motive power generated by a nuclear reactor
- 2. Gasses naturally found in the atmosphere
- 4. Greasy flammable liquid
- 6. Something that could benefit you
- 7. Rock made up of carbon
- 9. Power that is generated from moving water
- 10. Air in the sky