Question
Why the population growth has been rapid in last few hundred years?
Solution
The reasons are as follow:
(i)The development of steam engine which replaced the human and animal energy.
(i)The development of steam engine which replaced the human and animal energy.
(ii)Improvement in medical and sanitation conditions.
(iii)Rapid decline of mortality due to improved medical facilities.
(iii)Rapid decline of mortality due to improved medical facilities.
