Starting in the 1940s, why did pediatricians recommend bottle-feeding over breastfeeding?
A. Bottle-feeding formula contained more nutrients.
B. Parents could keep track of the amount of milk the baby was receiving.
C. Bottle-feeding offered significant emotional advantages to the mother.
D. Bottle-fed babies were more responsive to their mothers.
Answer: B
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All of the following are true about color blindness except:
a) people are either unable to distinguish two or more hues from each other or unable to see hue at all. b) color blindness has no easy method of detection. c) it seems to be more common in women than men. d) it involves missing or damaged cones.
What does the placenta NOT do?
a. allows nutrients to pass from mother to developing organism b. protects developing organism from bacteria and wastes in mother's blood c. protects the mother from waste produced by the baby d. produces hormones that maintain blood in the uterine wall and stimulates breasts to produce milk
Each of the following is true of an interval scale except that it ________
a. is the least informative measurement scale b. tells us how many equal-size units of one thing lies above or below another thing of the same kind c. has no absolute zero d. cannot tell us how many times bigger, smaller, taller, or fatter one thing is from another
The most common cause of male infertility is
A. incompatibility with partner. B. differences in sexual behavior. C. too few sperm. D. effects of excessive birth control.