of oxygen is present in the atmosphere
b. 21
Answers
Answered by
1
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.
Similar questions
Science,
6 days ago
Social Sciences,
13 days ago
Science,
7 months ago
History,
7 months ago
Science,
7 months ago