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Question
adoption studies consistently reveal that
a)about three-quarters of the differences in iq among children can be traced to their genetic makeup.
b)when young children are adopted into stimulating homes, their iqs rise substantially.
c)adopted children from low-iq biological mothers score below average on iq tests during the school years.
d)adopted children score, on average, 15 to 20 points lower in iq than their nonadopted agemates.
Answer
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