Question: Izenzo zabantu zingashintsha izinga lokuguguleka komhlabathi.Ikuphi kulokhu okulandelayo okungehlisa izinga lokuguguleka komhlabathi?
Options:
Ukusebenzisa umanyolo onothe nge-nitrogen
ukugcina utshani bugundiwe
ukwakha izindlu
ukutshala izihlahla emagqumeni
Answer: D