Name the process responsible for large energy production in the sun?

Name two conventional sources of energy.

In a hydro power plant,

Draw a labelled diagram of a floating gas holder type biogas plant and describe its working. Mention any two advantages of using animal dung for making biogas over using it as a fuel in the form of dried dung cakes.

Name the largest component of biogas.

Name the process by which energy is produced in a nuclear reactor.