What is composition of gases in atmosphere

1.	What is composition of gases in atmosphere
Answer» Nitrogen constitutes 78.8%, oxygen contributes 20.94% and argon contributes 0.93% in\xa0atmosphere. Other\xa0gases\xa0include carbon dioxide, helium, ozone, methane, hydrogen, krypton, xenon and neon, etc. Nitrogen and oxygen together constitute 99% of the\xa0atmosphere. Neon, krypton, xenon are scarce\xa0gases

Discussion