Approximately, which option best represents the first time in history that free

Question

Approximately, which option best represents the first time in history that free quarks would no longer be found in large amounts in the universe? A microsecond after the big bang A second after the big bang Ten seconds after the big bang Three minutes after the big bang One hour after the big bang A thousand years after the big bang A few hundred thousand years after the big bang A half a billion years after the big bang More than a billion years after the big bang When, approximately, did large amounts of neutral atoms begin to accumulate in the universe? Choose the answer closest to the correct time after the big bang. A microsecond after the big bang A second after the big bang Ten seconds after the big bang Three minutes after the big bang One hour after the big bang A thousand years after the big bang A few hundred thousand years after the big bang A half a billion years after the big bang More than a billion years after the big bang

Explanation / Answer

7.

Option 1

8.

Option 7

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