Why are coal, petroleum and natural gas called fossil fuels?


Coal, petroleum and natural gas are formed by fossils, so they are called fossil fuels.

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Why are air, water and soil called natural resources?


Air, water and soil are provided by nature, so they are called natural resources.

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Write the name of two natural substances.


(i) Air

(ii) Water

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Name the different varieties of coal found in nature.


Peat, Lignite, Bituminous coal and Anthracite are different coal found in nature.

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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.

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