Over the past 150 years in the United States, the average age at which puberty begins has
A) remained stable.
B) risen.
C) decreased.
D) decreased for males but not for females.

Question

Quizplus · Accepted Answer

Over the past 150 years, studies have shown that the average age at which puberty begins has decreased. This trend is attributed to improvements in nutrition and health, among other factors.

Over the Past 150 Years in the United States, the Average