atmosphere components and significance. please answer
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The atmosphere is an important part of what makes Earth livable. ... It blocks some of the Sun's dangerous rays from reaching Earth. It traps heat, making Earth a comfortable temperature. And the oxygen within our atmosphere is essential for life.
Composition of air
According to NASA, the gases in Earth's atmosphere include: Nitrogen — 78 percent. ... Carbon dioxide — 0.04 percent. Trace amounts of neon, helium, methane, krypton and hydrogen, as well as water vapor.
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