Shermana
Heretic
Post a link saying chemoautotrophs can't account for any significant contribution to the ozone layer. Make sure to include quotes from the links.
The Atmosphere is another thing. I believe the "Light" of Gen 1:1 is Cosmic Background Radiation, this would not be as much of a problem in creating the Ozone with the Atmosphere created by extremeophile Autotrophs.
I accept that the autotrophs may have accounted for the formation of the "Sky" on Day 2, Gen 1:8.
So with the intiial "Light source" of CBR, on this I can accept that the C-autotraph, then atmosphere, then BG Algae order of events works, but not with the Sun as the light source, then the UV is too destructive even with the initial atmosphere.