Oil is a type of fossil fuel that is formed from the remains of ancient marine plants and animals. It is a non-renewable resource that is used for various purposes, including fuel for transportation, heating, and electricity generation. In addition to its use as a fuel, oil is also used in the production of plastics, lubricants, and other industrial products.
Oil is formed over millions of years from the remains of marine plants and animals that were buried under layers of sediment at the bottom of ancient oceans. As these organic materials were buried deeper and exposed to heat and pressure, they underwent a process called diagenesis, which transformed them into hydrocarbons, the primary components of oil.
Oil is extracted from the ground through drilling wells into underground reservoirs. Once extracted, it is transported to refineries where it undergoes a process called refining. During refining, crude oil is separated into different components such as gasoline, diesel, and kerosene through a process called fractional distillation. These components are then further processed to produce various petroleum products.
The extraction, transport, and use of oil can have significant environmental impacts. Oil spills from tanker accidents or offshore drilling can harm marine ecosystems, while the combustion of oil releases greenhouse gases and other pollutants into the atmosphere, contributing to climate change and air pollution.