Across
- 2. disadvantages to wind energy
- 4. energy that uses the sun
- 7. energy that cannot be replaced easily
- 8. how to collect oil
- 10. how to collect natural gas
Down
- 1. energy that will be replaced easily
- 3. energy from recently dead stuff
- 5. energy that uses underwater turbine
- 6. energy that uses turbines in the sky
- 9. how to collect coal