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en.wikipedia.org/wiki/Petroleum

Petroleum is a naturally occurring, yellow-to-black liquid found in geological formations ..... Crude oil varies greatly in appearance depending on its composition. It is usually black or dark brown (although it may be yellowish, reddish, or even ...

www.investopedia.com/terms/c/crude-oil.asp

Crude oil is a naturally occurring, unrefined petroleum product composed of hydrocarbon deposits and other organic materials. A type of fossil fuel, crude oil can ...

oilprice.com/Energy/Crude-Oil/What-Is-Crude-Oil-A-Detailed-Explanation-On-This-Essential-Fossil-Fuel.html

Jul 24, 2009 ... Learn about crude oil, it's makeup, Oil production, and how we use it (beyond the standard fuels, such as gasoline.) Crude Oil is essential to our ...

www.ceoe.udel.edu/oilspill/crudeoil.html

Crude oil is pumped from the ground in the Middle East (e.g., Saudi Arabian Arab Light), West Africa (e.g., Nigerian Bonny Light), the Americas, and Asia ...

www.businessdictionary.com/definition/crude-oil.html

Definition of crude oil: Mixture of naturally occurring hydrocarbons that is refined into diesel, gasoline, heating oil, jet fuel, kerosene, and literally thousands of ...

www.eia.gov/energyexplained/index.cfm?page=oil_home

Crude oil is a mixture of hydrocarbons that formed from plants and animals that lived millions of years ago. Crude oil is a fossil fuel, and it exists in liquid form in ...

www.dictionary.com/browse/crude-oil

Crude oil definition, petroleum as it comes from the ground, before refining. See more.

www.eschooltoday.com/energy/non-renewable-energy/what-is-petroleum.html

Crude oil (a non-renewable resource) is usually found in underground areas called reservoirs. It is yellowish black in colour. This pages give information on ...

www.thebalance.com/crude-oil-prices-trends-and-impact-on-the-economy-and-you-3305738

Jul 23, 2017 ... Crude oil prices are the auction price for a barrel of oil at any given time. Here's how prices impact you and the economy, and recent trends.