Study the diagram carefully and attempt the questions.
How long did it take to reach the population from 3 billion to 6 billion?
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → 39 years
3 Billion Population- 1960
6 Billion Population- 1999
Increase for 3 to 6 billion in 39 years (1999-1960)