Which one of the following factors has contributed most in the rapid rise of human population in the present century?
Decrease in infant mortality
Polygamy
Decrease in birth rate
Increase in death rate

Question

Which one of the following factors has contributed in the rapid rise of human population in the present century-Decrease in infant mortalityPolygamyDecrease in birth rateIncrease in death rate

Toppr Admin · Accepted Answer

In the present century-xA0-reduced infant mortality contributed 4-5 years to overall improvements in life expectancy- reduced child mortality contributed nearly as much- and reduced mortality among young adults added about 3-5 years-So- the correct answer is option A-

Which one of the following factors has contributed most in the rapid rise of human population in the present century?Decrease in infant mortalityPolygamyDecrease in birth rateIncrease in death rate

In the present century, reduced infant mortality contributed 4.5 years to overall improvements in life expectancy; reduced child mortality contributed nearly as much, and reduced mortality among young adults added about 3.5 years.So, the correct answer is option A.

Which one of the following factors has contributed most in the rapid rise of human population in the present century?
Decrease in infant mortality
Polygamy
Decrease in birth rate
Increase in death rate

In the present century, reduced infant mortality contributed 4.5 years to overall improvements in life expectancy; reduced child mortality contributed nearly as much, and reduced mortality among young adults added about 3.5 years.
So, the correct answer is option A.