How is natural oil made?

Answer 1

Natural oil, primarily consisting of crude oil, is formed over millions of years from the remains of ancient marine organisms, such as phytoplankton and zooplankton. When these organisms die, their remains settle on the ocean floor, where they are buried under layers of sediment. Through intense heat and pressure, the organic material undergoes a transformation into hydrocarbons, which are the primary components of crude oil. This process, known as thermal cracking, typically takes place over geological timescales, often millions of years.