Okokuqala, umphezulu wetyhubhu yobhedu oluchanekileyo oluchanekileyo luya kwenza uluhlu oluqinileyo olukhuselayo, kungakhathaliseki ukuba igrisi, i-carbohydrates, ibhaktheriya kunye neentsholongwane, ulwelo oluyingozi, i-oksijeni okanye imisebe ye-ultraviolet, ayikwazi ukudlula kuyo, kwaye ayinakuchithwa ukungcolisa umgangatho wamanzi, kunye nama-parasites angakwazi ...
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