carbon dioxide and nitrogen are 2.
Carbon dioxide. It makes up around 96.5% of Venus' atmosphere.
lava
The Moon has no atmosphere.
nirtrogen
Hydrogen and Helium
Carbon dioxide makes up 95% of Mars' atmosphere.
nitrogen and oxygen
Venus has a thick atmosphere composed mostly of carbon dioxide (CO2). This carbon dioxide is found throughout the atmosphere of the planet, with the highest concentration occurring in the lower atmosphere. It is estimated to make up about 96.5% of the atmosphere.
gases, primarily nitrogen and oxygen
Hydrogen and Helium
Two elements,Nitrogen and Carbon Dioxide.Almost 99%
Venus is not made up of gas, but it does have a thick atmosphere. The main gas in the atmosphere is carbon dioxide, at about 96%. There's some nitrogen (about 3.5%) and traces of other things.