Which one of the following resources are not get exhausted?

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

 Inexhaustible resources are also known as

 Exhaustible resources are available in

The top layer of the earth's surface in which plants grow is

Natural resources should be used

Which one of the following is refined to produce petrol and diesel?

Which is extensively used for street lighting?

 Life is not possible without

Which resource is used to produce electricity?