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Which gas makes up 78 percent of Earth's atmosphere?

Question:

Which gas makes up 78 percent of Earth's atmosphere?

Gases in Earth's Atmosphere

Earth's atmosphere is a combination of gases that covers the Earth. It's important to us because it provides the air that we breathe and protects us from the heat and rays of the Sun. Many different gases combine to form Earth's atmosphere.

Answer and Explanation:

Nitrogen makes up 78 percent of Earth's atmosphere.

The atmosphere of Earth contains at least ten different gases. These include very small amounts...

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Learn more about this topic:

What is Atmosphere? - Layers, Gases & Pressure

from College Earth Science: Help and Review

Chapter 4 / Lesson 7
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