Ans: Importance of Energy Resources:
There are two most common resources of energy:
(i) Electricity:
On the basis of its generation source, electricity has following kinds: hydel,
thermal, nuclear, wind, and solar. Wind and solar sources are also called
renewable resources of energy.
(ii) Gas, Petroleum and Coal:
Gas, petroleum and coal, taken together are called “fossil fuels”. Timber
(wood) is also used as fuel. Energy is the source of all light and all scientific
progress in the world, without energy transport and industry would come to
standstill..