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OpenStudy (hellokitty17):
Which of the following was most likely responsible for the fact that organic molecules no longer form spontaneously on Earth?
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oregonduck (oregonduck):
a
OpenStudy (hellokitty17):
a, The amount of UV radiation increased. b.The amount of oxygen in the atmosphere increased. c.Water accumulated in the oceans. d.Earth's surface temperature warmed.
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