Classify energy resources into two categories. Give two examples of each.

Energy resources can be classified into:

1. Conventional Sources of Energy- These are the energy sources that have been used for a long time. They are usually non-renewable sources of energy. For example, coal and firewood.

2. Non-conventional Sources of Energy- These are the energy sources that are renewable and not as widely used as conventional sources. For example, solar energy and wind energy.

Note:

Conventional sources are limited in supply and are usually harmful to the environment while non-conventional sources are renewable in nature. It is suggested to shift to non-conventional sources because they are necessary for sustainable development.