Tonsefe timadziwa kufunika kwa nkhalango ku dziko lonse lapansi;pambuyo pa zonse, iwo amapanga 30% ya nthaka.Zachilengedwe zochokera kunkhalango zimathandizira mwakachetechete dziko lapansi, monga madzi opatsa thanzi, kuteteza mphepo ndi mchenga, kulimbana ndi kukokoloka kwa nthaka, kuyeretsa mpweya, kuwongolera mpweya, im...
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