Question

Which two gases make the bulk of the atmosphere?
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Answer 1

Two gases make up the bulk of the earth's atmosphere: nitrogen ( ), which comprises 78% of the atmosphere, and oxygen ( ), which accounts for 21%. Various trace gases make up the remainder. Based on temperature, the atmosphere is divided into four layers: the troposphere, stratosphere, mesosphere, and thermosphere

Answer 2

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Nitrogen and oxygen are the two gases. ☑☑☑