Umgangatho wokubonakala kwemveliso yinkalo ebalulekileyo yomgangatho weemvakalelo. Umgangatho wenkangeleko jikelele ubhekiselele kwizinto ezisemgangathweni zemilo yemveliso, ithoni yombala, isicwebezelisi, ipateni, njl njl. ezibonwa ngokubonakalayo. Ngokucacileyo, zonke iziphene ezinje ngamaqhuma, ama-abrasions, indentations, imikrwelo, umhlwa,...
Funda ngokugqithisileyo