Coal in the ground is a natural material. It is formed from the remains of plants that lived and died millions of years ago. Over time, the plant matter was subjected to heat and pressure, which resulted in the formation of coal.
Coal found in the ground is classified as a natural material. It is formed from the remains of plants and trees that lived millions of years ago and underwent a process called coalification. Over time, under high temperature and pressure, the plant materials transformed into solid coal. This process typically takes place in swamps or marshes where the plant material becomes buried and eventually compressed into coal seams.
