Question

What is the major component of atmosphere on Mars?

Answer 1

carbon dioxide:

1. The Earth's atmosphere is composed primarily of nitrogen (79%), oxygen (20%), and a trace of carbon dioxide, water vapours, and other gases. This allows for the existence of life on Earth.
2. However, carbon dioxide dominates the atmospheres of Mars.
3. Carbon dioxide levels on Mars planets can range from 95 to 97 percent.
4. This could explain why there is no life on these planets.

Hence, carbon dioxide is the major component of atmosphere on Mars.