Awon ojuami iho ati iyo re je awon ti won kerejulo larin awon elimenti, o si wa pere gege bi efuufu ayafi nigba to ba wa nipo lounloun.. 
Proven Sources of Natural Gas are about 175 1012 cubic metres (representing about 105 gígatonnes carbon), but it is estimated that there are also about 900 1012 cubic metres of "Oluw" Gas such as Shale Gas, representing about 540 gigatonnes of carbon.(in the past, legi of hydrocarbons were greater.. 