The energy-needs of the United States depend primarily on import which is increasing continuously. In 1995, the United States imported 44.5% of its total consumption which reached to 57% in 2010. The consumption of fossil fuel by the US is 25% of the total consumption in the world or more than the fuel consumed by Russia, China, India and Japan together. The daily consumption of fossil fuel in the US is 19.5 million barrels which is equivalent to 2.7 gallons per capita consumption daily. The major concern in the United States is to reduce the dependency of energy on foreign oil. Many organizations have been continuously demanding to find an alternative resource of the foreign oil and natural gas has emerged as a source of alternative energy which is considered environmentally and economically friendly (Cathy Proctor, 2013). Key Factors about Natural Gas(a) Geological factorsNatural gas is an energy source which occurs naturally and it is a mixture of hydrocarbons primarily methane and other higher alkanes in various proportion and it also contains nitrogen, carbon dioxide and hydrogen sulfide in lesser proportions. It is found in deep underground formations of natural rock along with other hydrocarbons like coal, methane clathrates, etc. Energy Sources In the 21st Century.
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