Venus has 96 percent of carbon dioxide
The inner planet that has an atmosphere containing mostly carbon dioxide is Venus. It has an extremely dense atmosphere, made up mostly of carbon dioxide with small amounts of nitrogen and trace amounts of other gases. The thick atmosphere contributes to Venus' extreme greenhouse effect, making it the hottest planet in the solar system.
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.
Mars, Venus's atmosphere is thicker than Earth's. Much thicker.
Mars is the only planet that is thin and is made up of only carbon dioxide. :) (Question to asker): Define "thin" at what part of it is made of CO2? But you probably mean the atmosphere so in that case then the answer above is correct... mostly.
Venus has an atmosphere that is 96.5% carbon dioxide, making it the planet with the highest concentration of carbon dioxide in our solar system.
Mars is known as the red planet. The planet itself is mostly rock. It is the thin atmosphere that is mostly carbon dioxide.
Venus
Mars has an atmosphere with low air pressure which is mostly carbon dioxide.
Venus has a very dense atmosphere composed mostly of carbon dioxide. This thick atmosphere traps heat, making Venus the hottest planet in our solar system.
The inner planet that has an atmosphere containing mostly carbon dioxide is Venus. It has an extremely dense atmosphere, made up mostly of carbon dioxide with small amounts of nitrogen and trace amounts of other gases. The thick atmosphere contributes to Venus' extreme greenhouse effect, making it the hottest planet in the solar system.
Venus has an atmosphere mostly of carbon dioxide and has a runaway greenhouse effect. Temperatures there are over 460 °C (860 °F).
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.
Venus has the most carbon dioxide atmosphere of any planet in the solar system, with about 96.5% of its atmosphere composed of carbon dioxide. This thick atmosphere contributes to the planet's extreme greenhouse effect and high surface temperatures.
The planet that is half the size of the earth, has 2 moons, and has an atmosphere of mostly carbon dioxide is Mars. The average length of a day on Mars is 37 minutes longer than that of the Earth.
That's MARS.
The planet you are describing matches the characteristics of Venus. Venus is nearly the same size as Earth, has no moons, and its atmosphere is mostly composed of carbon dioxide, with thick clouds of sulfuric acid.
Mars, Venus's atmosphere is thicker than Earth's. Much thicker.