Approximately how long did it take the human population to grow from 1 billion to 7 billion?
A) Between 100 and 200 years
B) Between 200 and 300 years
C) Between 300 and 500 years
D) Between 500 and 1,000 years
E) More than 1,000 years

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The Answer of Approximately how long did it take the human population to grow from 1 billion to 7 billion?
A) Between 100 and 200 years
B) Between 200 and 300 years
C) Between 300 and 500 years
D) Between 500 and 1,000 years
E) More than 1,000 years

Approximately How Long Did It Take the Human Population to Grow