Which one of the following is popularly known as black gold?

Which resource is used to produce electricity?

The resource used as fuel in cars, buses, scooters, ships and aeroplanes is

Which one of the following resource is used to run steam engines and factories?

 Life is not possible without

 Exhaustible resources are available in

The ways to save and collect rain water is known as

Sunlight is an example for

Natural resources should be used

Plants are also known as