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I also paused. I was thinking that oxygen is coming from previous stars exploding.
by teabee89 8y ago
I also paused. I was thinking that oxygen is coming from previous stars exploding.
- sigstoat 8y agothere's oxygen atoms, and there's O_2, which is a gas also called oxygen. the atoms came from stars (hand wave). those atoms have probably been recently recombined to form the diatomic gas, by plants.