Question

Discuss the major components of population growth.

Answer 1

Hint:When the number of individuals in a population increases it is known as population growth. There is a population growth of 1.1% per year globally. The population of a country can be affected by different factors which can cause an increase or decrease in the population.

Complete Answer:The major components that affect population growth are birth rate, death rate, and migration. The birth rate is the ratio of live births per thousand persons in a year. The death rate is the ratio of deaths per thousand persons in a year. Migration is referred to as the movement of people from one place to another. The reason for this can be the intention of settling, temporarily or permanently at a new location. Migration can be internal or external. Internal migration is when an individual, family, or a group of people move within the country, this type of migration doesn’t affect the population growth of a country but might change the population growth of the area they migrate to. There is a ‘natural increase’ in population growth when the difference between live births and deaths is more. There is also an increase in the population when the ‘net migration’ is more i.e. when more people are moving in a country than the number of people that are moving out. Migration plays a very important role in changing the composition of the population in a country.

Note:The increase in world population between 1990 and 2010 was 30%. The highest increase was in India and China. The major component of growth for these countries was the increase in birth rate being more than the death rate.