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