>>1036380 >Oxygen allowed proper Organic molecular chemistry to happen, being the middle-man for carbon and phosphorous/sodium/potassium/sulfur/etc. It wasn't "pure oxygen" (O, O2, O3) as your slop states "middle-man" ie part of bonds, -oxides. What do you think where the O2 came from plants "produced"? Not form nothing. Oxygen existed, but not by itself.