Qaphela ukuthi ungawabilisi amanzi kabili

Abaningi bethu babilisa amanzi izikhathi ezingaphezu kwesisodwa futhi basebenzise itiye, futhi singase sicabange ukuthi kungcono ukubilisa izikhathi eziningana, kodwa izifundo zamuva ziye zafakazela ukuthi kuyingozi kakhulu empilweni ukubilisa amanzi kabili noma izikhathi eziningana.

Lokhu kungenxa yokuthi kubangela ukwehla kwenani le-oxygen ne-nitrogen kanye nokugcwala kukasawoti namaminerali, okuthinta kabi ukusebenza kwezinso.