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Petroleum - Wikipedia
Extraction, refining and burning of petroleum fuels counteract carbon sinks by releasing large quantities of greenhouse gases back into the Earth's atmosphere, making petroleum one of the major contributors to anthropogenic climate change.

Petroleum | Energy, Products, & Facts | Britannica
A natural resource, petroleum is most often conceived of in its liquid form, commonly called crude oil, but, as a technical term, petroleum also refers to natural gas and the viscous or solid form known as bitumen, which is found in tar sands.

Petroleum - National Geographic Society
Petroleum, also called crude oil, is a fossil fuel. Like coal and natural gas, petroleum was formed from the remains of ancient marine organisms, such as plants, algae, and bacteria.

What is Petroleum: Definition, Formation, Constituents, Types and Uses
Petroleum, a naturally occurring liquid found beneath the earth’s surface, originates from the decomposition of organic matter over millions of years. The formation of petroleum begins with ancient marine organisms, such as plankton and algae, settling at the bottom of oceans and seas.

Oil and petroleum products explained - U.S. Energy Information ...
Petroleum products are fuels made from crude oil and the hydrocarbons contained in natural gas. Petroleum products can also be made from coal, natural gas, and biomass.

Petroleum production | Definition, History, & Facts | Britannica
Petroleum may exist in gaseous, liquid, or near- solid phases either alone or in combination. The liquid phase is commonly called crude oil, while the more-solid phase may be called bitumen, tar, pitch, or asphalt.

PETROLEUM Definition & Meaning - Merriam-Webster
The meaning of PETROLEUM is an oily flammable bituminous liquid that may vary from almost colorless to black, occurs in many places in the upper strata of the earth, is a complex mixture of hydrocarbons with small amounts of other substances, and is prepared for use as gasoline, naphtha, or other products by various refining processes.

History of the petroleum industry - Wikipedia
Petroleum's status as a key component of politics, society, and technology has its roots in the coal and kerosene industry of the late nineteenth century. One of the earliest instances of this is the refining of paraffin from crude oil.

Petroleum - Simple English Wikipedia, the free encyclopedia
Most petroleum is found by drilling down through rocks on land or off- shore on the continental shelf. Major producers are in the Middle East, the Americas, and Russia.

Petroleum | Journal | ScienceDirect.com by Elsevier
Read the latest articles of Petroleum at ScienceDirect.com, Elsevier’s leading platform of peer-reviewed scholarly literature