Oxygen and CO2 or carbon dioxide.
Venus and Mars haveatmospheres mostly consisting ofcarbon dioxide.
There are two such planets, Mars and Venus. Venus has a much thicker atmosphere than Mars, but both atmospheres are about 95% carbon dioxide.
venus (closer to 97%)
Mars and Venus are both planets that have atmospheres composed mostly of carbon dioxide.
carbon dioxide
Oxygen and CO2 or carbon dioxide.
Venus and Mars haveatmospheres mostly consisting ofcarbon dioxide.
It is Venus.
There are two such planets, Mars and Venus. Venus has a much thicker atmosphere than Mars, but both atmospheres are about 95% carbon dioxide.
Mars and Venus
Probably. Carbon dioxide is a fairly stable gas, formed from common elements, so it's likely that CO2 will be found on most planets.
carbon-dioxide, methane, ammonia,carbon-monoxide, helium et cetera make up the gas giants or jovian planets
venus (closer to 97%)
Because of the rock and carbon dioxide
Mars and Venus are both planets that have atmospheres composed mostly of carbon dioxide.
All the planets in our Solar System have atmospheres, except for Mercury, which only has minute traces of gases.