The carbon stored in the bodies of living organisms can move into rocks through a process called fossilization. This occurs when dead organisms, such as plants or animals, are buried and undergo decomposition under layers of sediment. Over time, the organic material is subjected to heat and pressure, causing it to undergo chemical changes and transform into fossil fuels, such as coal, oil, or natural gas. These fossil fuels contain carbon that was once stored in the bodies of living organisms and is now stored within the rocks.
