ABSTRACT
Natural gas is a nonrenewable fossil fuel, because most scientists and engineers believe that natural gas (as with oil) was formed from the remains of tiny sea animals and plants that died 300 to 400 million years ago. As noted earlier, when these sea animals and plants died, they sank to the bottom of the oceans where they were buried by layers of sediment that turned into rock. Over the years, these layers increased in height to several thousands of feet, subjecting the remains to high pressure, which, when combined with the high temperature of the Earth, converted this matter into not only oil, but also natural gas. Over time, high concentrations of natural gas became trapped in the layers of rock.
