Which is the following is true of good prenatal care?
a. Exercise should be avoided.
b. Tobacco, alcohol, and other drugs should be avoided.
c. Women should drink fewer fluids than before pregnancy.
d. Forty to sixty pounds should be gained.
Answer: B
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Steve and Helen have fraternal twins, a son and daughter who are two years old. What does research suggest about the way Steve and Helen will react when their children are physically aggressive?
a) Because they are twins, their reactions will be virtually identical. b) They will punish physical aggression equally by both children. c) They are more likely to encourage their son's physical aggression while discouraging their daughter's. d) They are more likely to encourage their daughter's physical aggression while discouraging their son's.
An example of a secondary sex characteristic is
a. ovary development. b. a deep voice. c. development of a clitoris. d. development of a vagina. e. formation of a penis.