One of the most widely accepted theories for the origin of life is the one proposed by Haldane and Oparin. In their theory, the first life formed from a “primordial soup” of organic molecules with the help of sunlight. During that time frame, the conditions on earth were quite different from today. The temperature was hellish and the atmosphere lacked any oxygen.
These conditions may have sparked the first precursors to life. However, the evidence is inconclusive and the origin of life still remains a mystery.
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