Sinikezela ngentsebenzo egqwesileyo i-oxygen ye-oxynigen seli. I-Oxtel yethu yeoksijini iphuhliswa, yayakhiwe, kwaye ihlolwe ngokwemigangatho yesizwe neyehlabathi. Baqulunqwe ngentsimbi engenasithuba esiphakamileyo kwaye bayile itanki itanki elinobuchule, iipropathi zokuvala ezithandekayo, amazinga e-ciremu ephantsi, njalo njalo.