Fossil Fuels: Oil and Natural Gas. Oil is the most widely used energy source and represents the largest industry on Earth. 19_16.JPG. Global Oil Demand & Supply. Worlds major producers of oil are not major consumers Oil must be imported into countries like U.S. and Europe
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ANTICLINE: upward folding of rock
SALT DOMES: underground columns of salt deposits
Originally there were about 2.2 trillion barrels of oil in the ground: it took about 150 years to use the first 1.1 trillion barrels, but will take less than 50 years to use the second 1.1 trillion
A Big Difference Between Oil and Natural Gas: Natural Gas is often used to generate electricity because it is the cleanest burning fossil fuel while oil is rarely burned to produce electricity