Fossil fuels formed by:

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Petrol

Coal

Oil

Dead remains of plant and animals under earth for million year ago

answer is D.

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Detailed Solution

Concept: Because they were formed from the fossilised, buried remains of plants and animals that once lived millions of years ago, coal, crude oil, and natural gas are all referred to as fossil fuels. Fossil fuels have a high carbon content due to their origins.
Oil, coal, and natural gas are examples of non-renewable fossil energy resources that were created when extinct prehistoric plants and animals were gradually buried under layers of rock.A group of energy sources known collectively as fossil fuels were created from prehistoric plants and animals during the Carboniferous Period, between 286 and 360 million years ago 1, before the emergence of dinosaurs.
Hence, option 4 is correct.

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