Igubungela iimeko ezikhokelela kuqhushumbo lwemethane, kugxininise kumanyathelo okukhusela kunye nokhuseleko kwiindawo apho imethane ikhona.
Igubungela iimeko ezikhokelela kuqhushumbo lwemethane, kugxininise kumanyathelo okukhusela kunye nokhuseleko kwiindawo apho imethane ikhona.