liquid, and solid of course
well there is 32,433 different types of petroleum
LPG Liquid petroleum gas
kerosene, gasoline, fuel and gas
The petroleum industry consists of so many different types of processes because so many different things can be made from petroleum.
Some of the least expensive types of alternative energy include petroleum, coal, alcohol and biomass. Solar and wind energy are, of course, free of charge.
Some types of fossil fuels are like natural gas, petroleum, and coal. There are many more
Petroleum, coal, and natural gas are a few types of fossil fuels
petroleum jelly, oil, and gasoline are some
mainly metal ores, some petroleum for plastic parts.
Coal, petroleum, and natural gas.
Chile
Oil, Coal, and Petroleum