Where does petroleum (fossil fuel) oil come from?
Over hundreds of millions of years, tiny life-forms such as plankton and algae algae, fell to the bottom of the sea floor, and were compressed over time into petroleum. A similar process took place over land. There are even some dinosaur bodies which have become petroleum, although these would only comprise a very small fraction of the bio-mass which became petroleum – in other words, oil, natural gas, and coal. Petroleum is used today in many ways – diesel fuel and gasoline for instance, or plastics, chemicals, cosmetics, and many other things.
