Gas, Oil and Coal
They are called fossil fuels.
Fuel is any combustible matter, to include coal, oil, gas or wood. A substance that produces useful energy
Coal is a fossil fuel.
Coal is a fossil fuel. The major fossil fuels are natural gas, crude oil and coal.
Coal and oil products .
coal , oil
yes it is
oil
The burning of fossil fuels (coal, oil and natural gas) in industry, transport and the generation of electricity releases carbon dioxide.
Coal, Oil, Natural gas. Coal first, Natural gas second, Oil third.
Coal