Translations:Adventist Youth Honors Answer Book/Nature/Alternative Fuels/27/en
From Pathfinder Wiki
Natural gas is a fossil fuel formed when layers of buried plants, gases, and animals are exposed to intense heat and pressure over thousands of years. The energy that the plants originally obtained from the sun is stored in the form of chemical bonds in natural gas. Natural gas is a burnable mixture of hydrocarbon gases, made up primarily of methane. It also contains ethane, butane, propane, and pentane before it is refined.
