Zisetyenziswa phi iimonitha zezigulane?
Iimonitha ze-Hwatime Izigulane zizixhobo ezisetyenziselwa ukulinganisa ngokuqhubekayo okanye ngokuphindaphindiweyo kunye nokubonisa iiparitha ezithile zomzimba zesigulane, ezifana nesantya sentliziyo, uxinzelelo lwegazi, izinga lokuphefumla, ukugcwala kwe-oksijini, kunye nobushushu bomzimba. Aba bajongayo...
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