Which of the following best describes changes in reproductive functioning as men and women age?
A) Reproductive ability declines equally in men and women as they age.
B) A woman produces fewer eggs as she ages and men produce fewer sperm as they age.
C) A woman will produce fewer eggs as she ages, but men typically do not show a decline in sperm production as they age.
D) Lower sperm counts in men are almost always related to a disease state, while in women the inability to reproduce is almost always age-related.
D
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Researchers have been unable to find evidence of depth perception in babies younger than ______ of age
a. five months c. four months b. six months d. eight months
The major surveys used in research studies of sexuality are similar in that they
A) generally represent the American population at large. B) ask about intimate and private aspects of participants' lives. C) usually are equally scientific in their methods and conclusions. D) typically focus on the incidence of sexual activities.