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Q&A What is my breathable atmosphere composed of?

This planet's atmosphere has oxygen at a partial pressure that is breathable to humans, and the rest of the atmosphere is, at least, not made up primarily of Nitrogen (that is, it's not just Earth'...

6 answers  ·  posted 5y ago by Michael Stachowsky‭  ·  last activity 5y ago by Michael Stachowsky‭

Question atmosphere