jawshoeaw t1_j1c3u7d wrote
Reply to comment by allegedly-insane in Mars' ancient atmosphere may not have had much oxygen after all by pecika
It’s not “extremely toxic” unless you don’t have the biochemistry to deal with it.
allegedly-insane t1_j1cgsrd wrote
Oxygen is extremely toxic. Both to humans and especially anaerobic life forms. Having the biochemistry to deal with low concentration of oxygen doesn't really mean much — it's like saying mercury isn't toxic if you have the biochemistry to deal with it.
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