One hypothesis about the origin of the building blocks for life is that they were
A. made inside meteors. B. formed when lightning struck water.
C. started by the RNA in the ocean. D. brought to Earth by meteorites.
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B. formed when lighting struck water
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The Oparin-Haldane hypothesis suggests that life arose gradually from inorganic molecules, with “building blocks” like amino acids forming first and then combining to make complex polymers. ... Some scientists support the RNA world hypothesis, which suggests that the first life was self-replicating RNA.
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