Kaya ndi mafakitale, ulimi, nyumba zankhondo kapena zachitukuko, malinga ngati kutenthetsa kutentha kumafunika, ubweya wa miyala ukhoza kuwoneka.Kugwiritsa ntchito kwakukulu kwa bolodi la miyala ndi motere: Ubweya wa mwala umagwiritsidwa ntchito makamaka pakutsekereza makoma, madenga, zitseko ndi pansi pomanga nyumba, insula ...
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