Question

Q7. Air is made up of nitrogen, and ?
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Answer 1

Answer:

Air constitute of nitrogen , oxygen and other gases like carbon dioxide , argon ,hydrogen , etc

Explanation:

Answer 2

Answer: The air in Earth's atmosphere is made up of approximately 78 percent nitrogen and 21 percent oxygen. Air also has small amounts of lots of other gases, too, such as carbon dioxide, neon, and hydrogen.