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Biology, 14.08.2020 23:01 skpdancer1605

The atmosphere is made up from 77 percent nitrogen (N2), 22 percent oxygen (02) and all other gases are less than one percent of the atmosphere. The crust, part of the Geosphere is made up for almost 47 percent of Oxygen. Why can’t we breathe the crust?

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The atmosphere is made up from 77 percent nitrogen (N2), 22 percent oxygen (02) and all other gases...
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