When a premature infant with a low birthweight is placed in an incubator, oxygen is carefully monitored because too _____ of a concentration of oxygen _____
a) high; can damage the baby's retinas, leading to permanent blindness
b) low; can damage the baby's retinas, leading to permanent blindness
c) low; can prove to be fatal for the baby
d) high; can prove to be fatal for the baby
a
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Which of the following would cause you to question that a trait is heritable if it was indicated by an adoption study?
A) biological parents choose adoptive parents especially similar to themselves. B) biological parents choose adoptive parents different from themselves. C) biological parents choose adoptive parents especially similar to their children. D) adoptive parents may also have their own biological children.
According to the text, an authoritative parent of a very aggressive child with a difficult temperament, who ignores explanations of rules, may _____
a. try harder to come up with better explanations b. try to be more responsive to the child c. become more authoritarian d. negotiate with the child more often