Ans. Sources of Energy.
The given web diagram explains about sources of energy and their kind. There are various sources of energy like sun, rain, wind, coal and electricity. From the sun we get light and heat. Solar panel are set up all over the world to produce electrical energy. Rain, wind and Coal being oldest form of known energy sources are widely used in our country. In India, the contribution of total electrical energy consumption from solar energy is very less as compared to other sources of energy.