what are fuels? in which different states peoples are found
Answers
Fossil fuels are in the news a lot these days — mostly because of our continuing efforts to replace them with more environmentally friendly sources of energy like solar and wind power.
The carbon emissions caused by the burning of fossil fuels are the main contributor to global warming. Of course, fossil fuels are also the main source of the energy that has driven modern civilization for centuries.
“Fossil fuels currently supply roughly 80 to 85 percent of the world’s energy,” says Edward Rubin, professor of environmental engineering and public policy at Carnegie Mellon University in Pittsburgh. “They are critically important for everything we do and value as individuals and as a society — all of which need a source of energy.”
What are the types of fossil fuels, and where are they found?
There are three main fossil fuels: coal, petroleum and natural gas. Coal is cheap and abundant, but it releases a lot of pollutants when burned. Petroleum, or crude oil, is harder to find and is typically a bit cleaner-burning — and, unlike coal, it can be pumped through pipelines and easily refined into fuels like gasoline or kerosene. Natural gas is also relatively inexpensive and less polluting than coal or crude oil.
Fossil fuels are found underground, trapped in deposits surrounded by layers of rock. Coal beds typically lie 200 to 300 feet below the surface. Oil and natural gas deposits are typically a mile or two down, and the deepest oil and gas wells have reached more than six miles below the surface.
Fossil fuel deposits are found all over the world, but some countries have more than others. The United States, Russia and China have the world’s largest coal deposits. Roughly half of the world’s oil and natural gas reserves are in the Middle East.
In the U.S., petroleum is produced in 32 states and in coastal waters — and most of it in five states: Alaska, California, New Mexico, North Dakota and Texas.
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