What is the importance of energy resources? Give two examples

What is the importance of energy resources? Give two examples each of conventional and non-conventional sources of energy.

Energy is required for all activities. It is needed to cook, to provide light and heat, to grow crops for agricultural activities, propel vehicles and to drive machinery in industries.
Thus, the sustainable availability of energy resources is vital for all human activities.
Two examples of conventional sources of energy are coal and petroleum. Two examples of non-conventional . sources of energy are solar energy and wind energy.