Methane yog ib daim ntawv ntawm tej nkev, Nws yog composed mas alkanes, xws li methane, ethane, propane, thiab cov butane, Nrog methane yog tus predominant component.
contrast, Thee roj yog ib roj roj consisting ntawm ib mixture ntawm combustible tej yam khoom, Cov pa roj carbon monoxide yog nws txaus constituent.