Define natural gas: contains a mixture of gases of which 50–90% is methane. It also contains smaller amounts of heavier gaseous hydrocarbons such as propane and butane, and small amounts of highly toxic hydrogen sulfide.

Liquefied petroleum gas (LPG): Mixture of liquefied propane C3H8 and butane C4H10 gas removed from natural gas and used as a fuel.

Liquefied natural gas (LNG): Natural gas converted to liquid form by cooling it to a very low temperature.

Advantages of using natural gas as an energy resource: ample supplies, versatile fuel, medium energy net, and Emits less CO2 + other pollutant into the air

Disadvantages of using natural gas as an energy resource: Low energy net for LNG, fracking uses and pollutes large volumes of water, potential groundwater pollution from fracking, and production and delivery may emit for CO2 and CH4 per unit of energy produced than coal.

Problems involved with increasing our use of LNG: we would become more dependent on countries we don't like, such as Russia and Iran and low net energy