Birth rate minus death rate plus or minus net migration can be used to compute overall population change.
The birth rate and migration are the two most important drivers in population change.
As the world progresses and new technology and medications are invented, the death rate has gradually dropped, allowing people to live longer.
The birth rate is defined as the number of live births per thousand people in a given year.
The death rate is defined as the number of deaths per thousand people each year.
The movement of people from one location to another is referred to as migration.
The cause for this might be a desire to relocate, either temporarily or permanently.
Internal or external migration is possible.
Internal migration occurs when a person, a family, or a group of individuals relocates within a nation. While this form of movement has no effect on the population of the country, it may alter the population of the region to which they relocate.
When there is greater ‘net migration,’ or when more people are entering into a nation than are leaving, the population grows.
Migration has a significant impact on the demographic composition of a country’s population.
Final Answer:
The mortality rate and birth rate are the two factors that influence population change. The number of births per 1000 people is known as the birth rate, whereas the number of deaths per 1000 people is known as the mortality rate.