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Greeley [361]
3 years ago
12

____________ is a gas that makes up 78% of the earth's atmosphere.​

Biology
2 answers:
AfilCa [17]3 years ago
8 0

Answer:

Nitrogen

Explanation:

Nitrogen makes up 78% of the atmosphere, while oxygen makes up only 21% and other gases make up around 1%

wolverine [178]3 years ago
4 0

Answer:

nitrogen

Explanation:

It's a mixture of different gases. The air in Earth's atmosphere is made up of approximately 78 percent nitrogen and 21 percent oxygen.S

<h2>hope it help</h2>
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