The fact that life expectancy has increased significantly over the past 60 years in developing nations is primarily a result of the

A) epidemiologic transition.
B) cultural transition.
C) demographic transition.
D) socioeconomic transition.


A

Environmental & Atmospheric Sciences

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A. X B. P C. R D. M E. S

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A. car battery B. car tire C. plastic bag D. aluminum can

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