The ____ is the last major organ system to develop during fetal life?
a. heart
b. lungs
c. intestines
d. skeletal muscles
B. Even a baby born in the seventh or eighth month of pregnancy may need the help of a respirator to breathe.
Psychology
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Pregnancy among single teenage girls is generally associated with
a. an end of their formal education. b. high rates of Cesarean-section. c. an increase in disorganized attachments in their infants. d. a higher rate of difficult temperaments in their infants.
Psychology
A researcher records the change in weight (gained or lost) during the first semester of college for each individual in a group of 25 freshmen, then calculates the average change in weight. The average is an example of a _______
a. parameter c. variable b. statistic d. constant
Psychology