Migration, fertility, and mortality are the basic fundamental elements determining the population growth and demographic structure of a country. The most striking feature of migration is that it can increase or decrease the population size and change its structure drastically at a given point in time. It also has a drastic impact on the fertility and mortality of a place.

Migration, fertility, and mortality are the basic fundamental elements determining the population growth and demographic structure of a country. The most striking feature of migration is that it can increase or decrease the population size and change its structure drastically at a given point in time. It also has a drastic impact on the fertility and mortality of a place.

Migration, fertility, and mortality are the basic fundamental elements determining the population growth and demographic structure of a country. The most striking feature of migration is that it can increase or decrease the population size and change its structure drastically at a given point in time. It also has a drastic impact on the fertility and mortality of a place.

Migration, fertility, and mortality are the basic fundamental elements determining the population growth and demographic structure of a country. The most striking feature of migration is that it can increase or decrease the population size and change its structure drastically at a given point in time. It also has a drastic impact on the fertility and mortality of a place.