During the second month of pregnancy, the
A) embryo reacts to light.
B) embryo kicks and bends its arms.
C) heart begins to pump blood.
D) heart develops separate chambers.
Answer: D
Psychology
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Which of the following events does NOT occur during the fetal stage?
A) The heartbeat can be detected with a stethoscope. B) The organism grows dramatically in size and weight. C) All major organ structures appear. D) First arm and leg movements occur.
Psychology
By the end of high school, about how many of American adolescents will have had sexual intercourse?
a. one-quarter c. one-half b. one-third d. two-thirds
Psychology