What is the major component of atmosphere on Mars?


The main component of the atmosphere on Mars is carbon dioxide.

  • Earth’s atmosphere is a mixture of nitrogen (79%), oxygen (20%), and a small fraction of carbon dioxide, water vapours and other gases. This makes the existence of life possible on Earth.
  • However, the atmospheres on Mars mainly consist of carbon dioxide.
  • The amount of carbon dioxide on Mars planets can range from 95% to 97%.
  • This may be the reason no life exists on these planets.

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