How did so much life appear on our planet when others seem devoid of any species at all?
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Answer:
The stage is set for the formation of the simplest form of self-replicating molecules. Not “DNA” True DNA would have formed much later. Perhaps something like a “proto RNA” molecule.
The prime suspect for the formation of same is currently the deep-ocean “smoker” vents that constantly spew hot, chemical-rich jets into the ocean. We know that a rich living biome exists around these smokers, ranging from simple “archaea” bacteria up through anaerobic “tube worms” that all synthesize chemicals from these vents. None of these require light or oxygen
Once a self-replicating molecule exists That’s the only spur we need for “life” to form at some point. We know that life on Earth appeared at about as early a date as it was possible for it to do so. About 3.7 billion years ago. That simple, archaic, neither-plant-nor-animal microorganisms was the only life that existed for a very long time. With no sexual reproduction, evolution was very slow. But eventually life “took off” and there was an essential explosion of early life forms, both plant and animal.
Explanation:
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Answer:
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