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Dense, and made mostly of Carbon Dioxide>
Venus has 96 percent of carbon dioxide
Venus has the thickest carbon dioxide atmosphere.
Mars and Venus are both planets that have atmospheres composed mostly of carbon dioxide.
The planet Venus has nitrogen, carbon dioxide and smaller amounts of other gases. Most of the gas is carbon dioxide.
Venus is made up of 95% Carbon Dioxide.
Venus
carbon dioxide
Mars has an atmosphere of about 95.72% carbon dioxide. Venus has an atmosphere of about 96.5% carbon dioxide
Carbon Dioxide. There is considerable sulphuric acid in Venus's atmosphere, too, but it is predominately Carbon Dioxide.
venus because it has 96.5% of carbon dioxide and Earth has 0.03% of carbon dioxide.
It is the hottest planet in the solar system. This is probably because its dense carbon dioxide atmosphere causes a "greenhouse effect".