Question

What gases are unique to planet Earth and why?

Answer 1

Answer:

Earth's atmosphere is roughly 78 percent nitrogen and 21 percent oxygen, with trace amounts of water, argon, carbon dioxide and other gases. Nowhere else in the solar system is there an atmosphere loaded with free oxygen, which is vital to one of the other unique features of Earth: life

Explanation:

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Answer 2

Answer:

On  Earth, the main component is nitrogen, oxygen, argon,  carbon dioxide, and trace gases.

Explanation:

Earth's atmosphere. Earth's atmosphere is roughly 78 percent nitrogen and 21 percent oxygen, with trace amounts of water, argon, carbon dioxide and other gases.