Zonyansa zomwe zili mu sesame zitha kugawidwa m'magulu atatu: zonyansa za organic, zonyansa zamafuta ndi mafuta.Zodetsa zakuthupi zimaphatikizanso fumbi, silt, miyala, zitsulo, ndi zina zambiri. Zodetsa zamoyo zimaphatikizanso tsinde ndi masamba, zipolopolo zapakhungu, chowawa, chingwe cha hemp, njere,...
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