The rapid increase in size and growth rate of population is called as population explosion.During the 20th century, the world population has grown by three times. And the Indian population has grown by five times.Population explosion is mainly due to slower decline in death rate, maternal mortality rate and infant mortality rate, longer life span, early marriages, child labour and lack of education.The population explosion can be controlled by motivating people to have smaller families by using contraceptive methods. To view other chapter videos please purchase from our site https://www.scholarswing.in