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OpenStudy (anonymous):
Which of the following was most likely responsible for the fact that organic molecules no longer form spontaneously on Earth? The amount of UV radiation increased. The amount of oxygen in the atmosphere increased. Water accumulated in the oceans. Earth's surface temperature warmed.
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OpenStudy (carlyleukhardt):
The amount of oxygen in the atmosphere increased :)
OpenStudy (anonymous):
Thank you!
OpenStudy (carlyleukhardt):
You welcome!
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