Fossil fuels, sometimes well-known as classic energy sources or nonrenewable power resources, are formed over millions of years through decayed animal and plant matter hidden under absent layers. Three main species of fossil fuels are coal, oil, and natural gas. This fuels are developed depending the quantity of animal and also plant matter, exactly how long it has actually been underground, and also the temperature and pressure used to the issue over time. Fossil fuels are combustible and release energy when they are burned. They room reformulated right into gasoline, diesel fuel, and heating oil. Additionally, they are shed to create electricity. From 1900 to 2015, fossil fuels accounted for at least 80 percent of total U.S. Energy consumption, according to the U.S. Energy Information Administration.
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The table listed below shows the top 5 natural gas-producing states in the United says in 2015.<31>
|Source: U.S. Energy Information Administration, \"Which claims consume and also produce the most natural gas?\" accessed April 2, 2015|
In 2015, the United claims consumed around 797.7 million brief tons the coal, 7.12 billion barrels that petroleum, and also 27.3 trillion cubic feet of herbal gas.
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The chart below shows total U.S. Coal usage from 1949 come 2016 by sector.<33>