23 Jul IS THERE EVIDENCE SUPPORTING AN OXIDIZED EARLY ATMOSPHERE AND IF SO HOW DID LIFE COME ABOUT?
I ask this question in relation to the origin of life. I realise it would probably be better suited Show more I ask this question in relation to the origin of life. I realise it would probably be better suited to a geology stack exchange but it does not yet exist. The Miller-Urey experiment gives a lab based demonstration of how organic compounds may have been produced. It recreates that conditions that are thought to have existed in the early atmosphere (Hadean period). What this experiment relies on however is an assumption that the atmosphere lacked oxygen (reducing). The Miller-Urey experiment does not produce proteins if it is conducted in a oxidizing environment. Ive seen that there is some debate over the oxidation state of the atmosphere and the main evidence for a reducing atmosphere is that life wouldnt have been able to begin without it. Is there evidence supporting an oxidized early atmosphere and if so how did life come about? Show less
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