Question

How long did the world take to increase its population from 5 billion to 6 billion?

Answer 1

Answer:

It is estimated that the population of the world reached one billion for the first time in 1804. It would be another 123 years before it reached two billion in 1927, but it took only 33 years to rise by another billion people, reaching three billion in 1960.

Explanation:

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