Question

what is the composition of air?​

Answer 1

Answer:

Oxygen — 21 percent. Argon — 0.93 percent. Carbon dioxide — 0.04 percent. Trace amounts of neon, helium, methane, krypton and hydrogen, as well as water vapor.

Answer 2

Answer:

21% is oxygen 78% nitrogen

1% smoke, water vapour and other gases. pls mark me as a brainlist