Approximately how long did it take the human population to grow from 1 billion to 2 billion?
A) Between 10 and 20 years
B) Between 100 and 200 years
C) Between 300 and 500 years
D) Between 1,000 and 2,000 years
E) More than 2,000 years

Question

Quizplus · Accepted Answer

It took approximately 123 years for the human population to grow from 1 billion to 2 billion. The world population reached 2 billion in 1927, just over a century after hitting 1 billion in 1804.

Approximately How Long Did It Take the Human Population to Grow