Ingaba uyazi? Ukongeza kwinkunkuma efuna ukulungiswa, i-leachate yetiphu nayo ifuna ukulungiswa. Ngokwempawu zetiphu evuzayo, inokwahlulwa ngokulula ibe: kwisikhululo sotshintshiselwano sokulahlwa kwenkunkuma, inkunkuma yasekhitshini, inkunkuma yenkunkuma, kunye neplani yokutshisa inkunkuma...
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