Describe the conditions present on Earth at the time of its early second atmosphere. What chemicals and
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Describe the conditions present on Earth at the time of its early second atmosphere. What chemicals and energy sources were present? What chemical in particular was absent? Can you speculate about what conditions would be like on Earth today if meiosis, crossing-over, and sexual reproduction had never evolved?
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The early second atmosphere of Earth formed around 24 to 25 billion years ago during the Archean Eon During this time the composition of the atmosphere was markedly different from the primordial atmos...View the full answer
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