A circadian rhythm is
a. a cycle of lunar phases.
b. an old method of birth control.
c. a cycle connected to the 24-hour period of earth's rotation.
d. a cycle of wakefulness based on meteorological conditions.
C
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Which of the following statements is true with respect to studies of sexual orientation in animals?
a. Early hormonal manipulation of testosterone results in same sex-preference later in life in several species b. Naturally occurring homosexual behavior has been observed in numerous animal species, such as sheep and gulls c. Animals engage in homosexual behavior, even when in mixed-sex groups d. All of the above
Research indicates that there are genuine (although often small) gender differences in verbal ability, mathematical ability, spatial ability, aggression, and nonverbal communication. There is also some evidence that biological differences between the sexes in hormone levels and brain organization contribute to some or all of these behavioral differences. Adopt an evolutionary perspective, and
discuss why these biological differences and their consequent behavioral differences might exist. What will be an ideal response?