Nitrogen makes up most of our atmosphere. Second is Oxygen.
gas-gas
Mars has an atmosphere but it is much thinner than earths. It's mainly carbon dioxide gas (95%).
The Gas Giants have a deep gas atmosphere and earth have a not so deep atmosphere
Oxygen gas
Nitrogen
oxygen
nitrogen
ozone
The Gas Giants have a deep gas atmosphere and earth have a not so deep atmosphere
The Gas Giants have a deep gas atmosphere and earth have a not so deep atmosphere
This gas was carbon dioxide.
Methane gas