How much of Earth's atmosphere is made up of nitrogen and oxygen? A. Between 25 and 75 percent B. 100 percent C. Less than 1 percent D. Close to 99 percent

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Daniel Benamy · Answer 1 · 2017-07-03T15:03:18+0000

Answer: A. between 25 and 75 percent

The Earth's atmosphere is made up of 78% nitrogen and 21% oxygen. It only has a little percentage of other elements such as argon and carbon dioxide. Water vapor is also found in the atmosphere.

How much of Earth's atmosphere is made up of nitrogen and oxygen? A. Between 25 and 75 percent B. 100 percent C. Less than 1 percent D. Close to 99 percent

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