3 ms·
For an illustration see the Great Oxygen Catastrophe. https://en.wikipedia.org/wiki/Great_Oxygenation_Event https://en.wikipedia.org/wiki/Great_Oxygenation_Eve
by Symmetry 9y ago
For an illustration see the Great Oxygen Catastrophe.
https://en.wikipedia.org/wiki/Great_Oxygenation_Event https://en.wikipedia.org/wiki/Great_Oxygenation_Event