Question

What is meant by a non-renewable source of energy? Give two examples of non-renewable source of energy. 

Answer 1

The sources of energy that have accumulated in nature over a very long time and cannot be quickly replaced when exhausted are called non-renewable sources of energy.

The two examples of non-renewable sources of energy are:
  a) Fossil fuels (such as coal, petroleum and natural gas)
  b) Nuclear fuels (such as uranium)