Chemistry, 19.03.2020 09:30 jessiegarrison1

Nucleosynthesis began when and ended when

A. the Big Bang occurred; the Big Crunch occurred

B. nuclear reactions could first occur; matter had condensed into galaxies and stars C. the cosmic microwave background radiation formed; dark energy replaced it as the dominant energy form

D. the universe had cooled enough for atoms to combine; protons and neutrons were too far apart to form nuclei

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Nucleosynthesis began when and ended when

A. the Big Bang occurred; the Big Crunch oc...