List in tabular form three distinguishing features between a thermal power plant and a geothermal power plant.

How is the supply of electricity maintained by a wind mill when there is no wind? By a solar panel when there is no sun?

State the energy conversion taking place in the solar cell panel. For what purpose, solar cell panel is used? State its two main advantages.

(a) Name two elements which can be used for generation of electricity in a nuclear power plant.

(b) Why could many nuclear power plants not be installed in our country? Give two reasons.

(a) How does construction of dams across the river get linked with production of greenhouse gases?

(b) How do technological inputs improve the efficiency of bio-mass fuels?