Across
- 4. energy inside the nucleus
- 6. energy obtained from wind
- 8. energy obtained from water
- 10. concreted tanks for biomass energy
- 11. source which can be renewed
- 13. which gas is found more deeper than crude oil
Down
- 1. a gas which is created when fossil fuels were burnt
- 2. thin layer
- 3. layer of sun which we can see
- 4. source which cannot be renewed
- 5. what is found when mining is done?
- 7. process when nuclei combines
- 9. coal is extracted by what?
- 10. energy obtained from plant and animal waste
- 12. energy related to sun