◆Ijeneretha ye-nitrogen ekhethekile embonini kawoyela negesi ilungele ukuvikelwa kwe-nitrogen, ukuthuthwa, ukumboza, ukushintshwa, ukuhlenga, ukunakekelwa, umjovo we-nitrogen neminye imikhakha ekuhloleni uwoyela negesi ezweni, uwoyela osogwini kanye nolwandle olujulile kanye negesi yemvelo. ukuxhashazwa....
Funda kabanzi