During burial, most of the hydrogen and oxygen are expelled from peat to concentrate carbon and form coal.

Name: During burial, most of the hydrogen and oxygen are expelled from peat to concentrate carbon and form coal.
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During burial, the pressure and temperature cause hydrogen and oxygen to be expelled from peat, which leaves behind a carbon-rich substance that will eventually become coal. Therefore, most of the hydrogen and oxygen are expelled from peat during the coal formation.

During Burial, Most of the Hydrogen and Oxygen Are Expelled