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Biology, 02.08.2019 21:00 babydani11
According to the big bang theory, how long ago did the universe begin? 5 to 10 billion years ago 13 to 15 billion years ago 23 to 25 billion years ago 30 to 40 billion year ago
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According to the big bang theory, how long ago did the universe begin? 5 to 10 billion years ago 13...
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