Question

Main cause of population explosion is
A) Decline in Death rate
B) Decrease in birth rate
C) Improvement of agriculture
D)Better mean of transport

Answer 1

Hint:Overpopulation of a place means the many people living per unit area. Population is rising at an alarming rate. The growth of population has significantly increased since the industrial revolution.

Complete answer:
To solve this question, we must know about the causes and effects of population explosion.
Population explosion means increase in the number of people in a particular area. It is the major issue faced in the developing countries.
The factors which affect the increase in population are-
>Increase in Birth rate- Due to lack of awareness the birth rate is increasing dramatically. With better health facilities, the infant mortality has reduced which has increased the birth rate.
>Decrease in death rate-With the advancement of science and technology, the death rate has reduced significantly. It is one of the main reasons for rapid increase in population.
>Improvement in agriculture and means of transport- With the advancement in technology, food production has increased many folds. The food production rate has gone higher to meet the demand of increasing population. The means of transport has also improved to meet the requirement.

The correct answer is (A). The main cause of population explosion is decline in death rate.

Note: Population is doubling in every 25 years. The increase in population is creating a negative equilibrium and disturbing the balance of nature. Clearing of forest and global warming are the immediate effects of overpopulation.