The Earth's atmosphere is held to the planet by gravity and 99% of the atmosphere is concentrated starting at 50 kilometers above the Earth's surface.

Name: The Earth's atmosphere is held to the planet by gravity and 99% of the atmosphere is concentrated starting at 50 kilometers above the Earth's surface.
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Question

Quizplus · Accepted Answer

The Earth's atmosphere is held to the planet by gravity but 99% of the atmosphere is concentrated starting at 20 kilometers (12 miles) above the Earth's surface, not 50 kilometers.

The Earth's Atmosphere Is Held to the Planet by Gravity