CRUDE OIL
Crude oil is a flammable liquid found in subterranean deposits and best known for its use as a fuel and as a raw material for chemical products.
It was originally created from the remains of animals and plants that lived in a water environment. Millions of years ago, much of the earth was covered by seas- more than it is today. Countless millions of tiny creatures and plants lived in these seas. When they died they sank to the bottom, and as the years passed more and more piled up on the sea bed. Silt and sand piled up with them, and the whole lot was pressed firmly down by late…
