What percentage of the world's population is in the United States, and what is its share of world economic output?

A) 3% of population; 12% of output
B) 5% of population; 25% of output
C) 9% of population; 20% of output
D) 15% of population; 40% of output
E) 20% of population; 50% of output


B

Environmental & Atmospheric Sciences

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