Across
- 3. non-renewable energy source
- 7. what you use to power your house
- 10. remains of ancient plants and animals
- 11. air in motion
- 12. the ability to do something
- 13. something you burn when grilling
- 14. a toxic element in earth crust
- 15. organic matter used to make energy
Down
- 1. a green house gas we breathe out
- 2. energy made with moving water
- 4. heat within the earth
- 5. a flammable gas
- 6. energy made from natural resources
- 8. energy made with the sun
- 9. a fossil fuel made of methane