GEOLOGY

Detailed explanation-1: -COAL IS A FOSSIL FUEL As the plants died, they sank to the bottom of the swamps. Over the years, thick layers of plants were covered by dirt and water. They were packed down by the weight. After a long time, the heat and pressure changed the plants into coal.

Detailed explanation-2: -The bulk of Earth’s coal deposits used as fossil fuel today was formed from plant debris during the late Carboniferous and early Permian periods. The high burial rate of organic carbon correlates with a significant drawdown of atmospheric carbon dioxide (CO2) at that time.

Detailed explanation-3: -Ancient swamps are a source of the fossil fuel coal. Coal is formed from plants that died millions of years ago.

Detailed explanation-4: -Coal. Coal comes from the energy stored by land plants from swamps that lived hundreds of millions of years ago.