Mars' atmosphere is made mostly of carbon dioxide, with some nitrogen and argon. It has a very small amount of oxygen and carbon monoxide and tiny amounts of noble gases and other compounds. Earth's atmosphere is 100 tim... More »

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The composition of Mars' atmosphere is 95.32 percent carbon dioxide, 2.7 percent nitrogen, 1.6 percent oxygen and 0.08 percent carbon monoxide. The remaining 0.3 percent is made up of various trace elements. More »

According to Space.com, the atmosphere on Mars is around 100 times thinner compared to that of the Earth's and is composed of about 95 percent carbon dioxide. However, the Martian atmosphere is still thick enough to sust... More »

The atmosphere of Venus is made up of 96 percent carbon dioxide, 3.5 percent nitrogen and less than 1 percent of the following: argon, water vapor, carbon monoxide and sulfur dioxide, according to Windows to the Universe... More »

www.reference.com Science Astronomy Planets

Earth's atmosphere consists of a variety of gases, including nitrogen, oxygen, argon and carbon dioxide, along with tiny solid particles such as dust, pollen and plant particles. The atmosphere also contains a small amou... More »

www.reference.com Science Earth Science Atmosphere

According to Space.com, the atmosphere on Mars is around 100 times thinner compared to that of the Earth's and is composed of about 95 percent carbon dioxide. However, the Martian atmosphere is still thick enough to sust... More »

The four main gases in the atmosphere are nitrogen, oxygen, argon and carbon dioxide. However, two of these gases make up most of the atmosphere. They are nitrogen and oxygen, which between them account for over 99 perce... More »