how is coal formed ? describe the process
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Coal beds consist of altered plant remains. When forested swamps died, they sank below the water and began the process of coal formation. However, more than a heavy growth of vegetation is needed for the formation of coal. There are four stages in coal formation: peat, lignite, bituminous and anthracite.
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Coal is formed when the dead plants and ferns died, they formed layers at the bottom of the swamps. 2. Water and dirt began to pile up on top of the dead plant remains.
And after several years it forms a combustible substance.
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