The major problems that might occur because of population explosion are:-
The health of the nation will be in trouble.
A drastic decrement in the number of natural resources will happen.
Per capita income will come down.
Rapid population growth leads to environmental change. Rapid population growth has swelled the ranks of unemployed men and women at an alarming rate. Due to this, a large number of people are being pushed in ecologically sensitive areas such as hillsides and tropical forests. A large population has the potential to be great for economic development, but limited resources and a larger population puts pressures on the resources that do exist. Environmental degradation, combined with the growth in world population, is a major cause of the rapid increase in human diseases, which contributes to the malnutrition of 3.7 billion people worldwide, making them more susceptible to disease.