In the United States and a few European countries, __________ are responsible for a modest, continuing trend toward earlier menarche.
A) increased rates of infectious disease
B) soaring rates of overweight and obesity
C) eating disorders, such as anorexia and bulimia,
D) lack of standardized health care and high poverty rates
Question 2
In industrialized nations, age of menarche __________ per decade from 1900 to 1970.
A) increased by about 1 to 2 months
B) increased by about 3 to 4 months
C) declined by about 3 to 4 months
D) declined by about 5 to 6 months
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