]
-[TODO: compare Great Oxidization Event and its timescale to the Industrial Revolution??]
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+[TODO: compare Great Oxidization Event and its timescale to the Industrial Revolution??]
+
+"Genetic and environmental contributions to IQ in adoptive and biological families with 30-year-old offspring"
+https://www.sciencedirect.com/science/article/abs/pii/S0160289621000635
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