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How is coal formed?

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How is coal formed?

Posted by Maira Fatimah 5 years, 11 months ago

CBSE > Class 10 > Social Science

1 answers

Yogita Ingle 5 years, 11 months ago

The formation of coal takes millions of years, which is why it is an exhaustible and non-renewable natural resource.
It was formed around 300 million years ago when the earth was covered with swampy forests.
When plants in these forests- mainly trees, mosses, ferns, and reeds died, they fell into the swamps.
Thus there was a thick layer of dead vegetation in the swamp formed.
As years passed, more and more plants died and many such layers were formed, one above each other.
The topmost layers compressed the layers below. Heat and pressure caused some physical and chemical changes and eventually, some carbon-rich deposits were formed.

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