Sometimes referred to as air, what do we call the mixture of gases that surrounds the planet?

Sometimes referred to as air, what do we call the mixture of gases that surrounds the planet?

Correct Answer: atmosphere
hemisphere
outer space
galaxy

Explanation: Why is Earth the only planet in the solar system known to have life? The main reason is Earth’s atmosphere. The atmosphere is a mixture of gases that surrounds the planet. We also call it air. The gases in the air include nitrogen, oxygen, and carbon dioxide. Along with water vapor, air allows life to survive. Without it, Earth would be a harsh, barren world.

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