Answer:
Nitrogen
Oxygen
Argon
Carbon Dioxide
Methane
Ozone
Step-by-step explanation:
N₂ accounts for 78% of the atmosphere.
O₂ accounts for 21% of the atmosphere.
Ar accounts for 0.9% of the atmosphere.
CO₂, CH₄, and O₃ only take up 0.1% of the atmosphere.