Question

How is our atmosphere different from the atmospheres on Venus and Mars?
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Answer 1

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Earth’s atmosphere is different from those of Venus and Mars.

This difference lies essentially in their compositions.

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 Venus and Mars mainly consist of carbon dioxide.

The amount of carbon dioxide on these planets can range from 95% to 97%.

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Answer 2

Explanation:

Answer: The atmosphere of Earth contains a mixture of many gases like nitrogen (78.08%), oxygen (20.95%), carbon dioxide (0.03%) and water vapour (in varying proportion). On the other hand, the atmosphere on Venus and Mars mainly contains carbon dioxide, i.e., about 95-97%.