Fossil fuels are formed by organic remains that have been buried under rock. "Organic remains" can include animals and plants (think of oil and dinosaurs).
Fossil fuels were formed by the compression of dead plants and animals due to high pressure and temperature. Some fossil fuels are coal, petroleum and natural gas
Fossil fuels are formed from the remains of ancient plants and animals buried under layers of sediment over millions of years. Intense heat and pressure transform these remains into hydrocarbons, resulting in coal, oil, and natural gas. This process takes a very long time, making fossil fuels a nonrenewable resource.
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