GK mndandanda wodziyimira pawokha pampu ndi njira yaying'ono yoperekera madzi, yomwe ili yoyenera kutengera madzi apanyumba, kukweza madzi bwino, kukakamiza mapaipi, kuthirira m'munda, kuthirira masamba owonjezera kutentha komanso kuswana.Ndiwoyeneranso kupereka madzi kumidzi, aquacultur ...
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