Umoya we-mars mncane ukwedlula owomhlaba. Emhlabeni, amaphesenti angama-21 ezulu aphefumula umoya-mpilo, okwenza kube yindawo enhle yempilo yomuntu. Kepha kuma-mars, umoya-mpilo wenza amaphesenti angu-0,13 emoyeni. Iningi liyi-carbon dioxide, okuyingozi kubantu. Language: Zulu