Where does the c in fossel fuels come from?

The "c" in "fossil fuels" refers to carbon, which is a primary component of these energy sources. Fossil fuels, such as coal, oil, and natural gas, are formed from the remains of ancient plants and animals that decomposed over millions of years under heat and pressure. This process results in carbon-rich deposits that, when burned for energy, release carbon dioxide and other greenhouse gases into the atmosphere. Thus, the "c" signifies the carbon content that is central to the energy and environmental implications of fossil fuels.