Name the different varieties of coal found in nature.
Peat, Lignite, Bituminous coal and Anthracite are different coal found in nature.
Why are air, water and soil called natural resources?
Air, water and soil are provided by nature, so they are called natural resources.
What are fossil fuels?
Fossil fuels are the energy rich components of carbon which were made by the decomposition of plants and animals buried under the earth, long-long ago. For example petrol, and CNG gas and LPG gas.