Coal, Natural Gas, Oil, and Wind
If you insulate a home then it keeps the heat in the home for longer which means that you do not need to burn as much fossil fuel to keep warm.
We burn it to fuel our cars. heat our homes and turn it into feed and medicine also.
Fossil fuel are burnt to release HEAT
Yes, heat is a factor in the formation of fossil fuels (coal, oil and natural gas).
You burn it; it gives off heat; you use the heat.
Fuel is needed to heat homes. Cold environments, such as Montana and Colorado, are always cold and people need much more heat to constantly heat their homes.
Natural gas works as a fossil fuel because you BURN it and it turns into heat and energy exactly like a fossil fuel.
carbon dioxide
Through combustion they produce heat.
Fossil fuel mixes with pressure to create carbon dioxide, water, and heat. This process takes millions of years to create which severally limits the prolonged usage of fossil fuels.
Geothermal energy is not a fossil fuel, because it is harnessing energy from the thermal heat energy within the earth and is not dependent upon decomposed ancient plants and animals, which is what coal, oil, and natural gas are, which is why they are called "fossil fuels."
Through combustion they produce heat.