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What is the approximate population of North and South America combined
The population of North and South America combined is approximately:
A. 900 million, or about 13 percent of the world's population.
B. 700 million, or about 10 percent of the world's population.
C. 500 million, or about 7 percent of the world's population.
D. 1 billion, or about 15 percent of the world's population.
