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a PCB (polychlorinated biphenyls), loko ti tirhisiwa ngopfu ku sukela hi va-1930, a ti ri ni swiaki leswi nga ni mafurha leswi tlulaka 200 leswi a swi tirhisiwa tanihi switsakamisi, tipulasitiki, tipulasitiki to tsondzela gezi, swidlaya-switsotswana, swisibi swo hlantswa swibya ni swin’wana. Hambileswi PCB sweswi yi yirisiweke ematikweni yo tala, kambe se ku endliwe tithani leti nga exikarhi ka miliyoni yin’we na timiliyoni timbirhi. Chefu leyi humaka eka ti-PCB leti cukumetiweke leti hangalakeke ni mbango ti vange khombo.

Minkandziyiso Ya Xitsonga (1987-2025)
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