Question

how coal and petroleum is formed​

Answer 1

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$\blacksquare$ Coal and petroleum have been formed from the dead remains of plants and animals that were subjected to a lot of pressure inside the Earth and undergone many biological and geological changes.

Answer 2

Answer:

coal is formed due to the compression of plant material over millions of years and is found in variety of forms.

petroleum is formed when oils are trapped in the crest of upfold and these are decomposition of animal remains over millions of years