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13 September, 16:38

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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  1. 13 September, 18:07
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    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.
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