Abstract:Earth's surface acquired necessary life-giving volatile elements carbon, nitrogen, and sulfur from a collision with a Mercury-like planetary embryo ~ 4.4 billion y ago. Icy comets containing hydrocarbons collided with a cooling prebiotic Earth to create impact reactive environments that via classical anthropic causality introduced primordial "ribozyme-like" RNA complexes which could duplicate a few molecular units/24 hrs. Random classical processes introduced energetically accessible duplex RNA segments contai… Show more
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