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Gasoline can be released into the Earth's environment as an uncombusted liquid fuel, as a flammable liquid, or as a vapor by way of leakages occurring during its production, handling, transport and delivery. [83] Gasoline contains known carcinogens, [84] [85] [86] and gasoline exhaust is a health risk. [75]
Marine Vessels and barges can transport this petroleum all around the world. Because these vessels can carry a lot of fuel, the amount it costs per barrel to move this oil is very cheap. These tankers are also the only practical way to move crude oil across the oceans.
The world consumes 36 billion barrels (5.8 km 3) of oil per year, [1] with developed nations being the largest consumers. The United States consumed 18% of the oil produced in 2015. [2] The production, distribution, refining, and retailing of petroleum taken as a whole represents the world's largest industry in terms of dollar value.
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Petroleum [a] is a naturally occurring yellowish-black liquid mixture. It consists mainly of hydrocarbons, [1] and is found in geological formations.The term petroleum refers both to naturally occurring unprocessed crude oil, as well as to petroleum products that consist of refined crude oil.
Gasoline is the most widely used liquid fuel. Gasoline, as it is known in United States and Canada, or petrol virtually everywhere else, is made of hydrocarbon molecules (compounds that contain hydrogen and carbon only) forming aliphatic compounds, or chains of carbons with hydrogen atoms attached.
These discoveries rapidly spread around the world. The world's first commercial oil well was drilled in Poland in 1853, and the second in nearby Romania in 1857. At around the same time the world's first, but small, oil refineries were opened at Jasło in Poland, with a larger one being opened at Ploiești in Romania shortly after. Romania is ...