Composed of, by volume, 78% nitrogen, 2 1 % oxygen, and traces of neon, helium, krypton, hydrogen, zenon and ozone.
Wenziwe ngobunzima, 78%yenayitrogini, 21% oxygini, kunye nomkhondo wegesi ethile engenambala,ihiliyam, krayiptoni, hydrojini,zenon kunye ne-ozone.