The increasing use of fossil fuel is leading to its shortage. It is estimated that if the present rate of consumption continuous the reserves of these fuel will get exhausted. Moreover, their use also causes environmental pollution. Therefore, there is need for using non – conventional sources such as solar energy, wind energy and tidal energy which are renewable. (a) What resulted in the shortage of fossil fuel?
(b) What kind of problems are faced by human beings, while using petroleum and coal.
(c) Why Solar and Wind Energy are considered as renewable?
(d) Mention one advantage and disadvantage for the use of an electric car?