Question

oxygen forms – percentage of the atmosphere science science ​

Answer 1

Answer:

21 percent

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..........

Answer 2

Answer:

Hey

Explanation:

Oxygen forms percentage in atmosphere is 21 percent ....