19.Explain the process of population change.

1.	19.Explain the process of population change.
Answer» Ans :- There are three main processes of population change. Birth ratesDeath rates andMigration.Natural increase of population is the difference between birth rates and death rates. i. Birth rate is the number of live births per thousand persons in a year. ii. It is a major component of growth in India because birth rates have always been higher than death rates here. iii. Death rate is the number of deaths per thousand persons in a year. iv. Main cause of rapid rate of growth of the Indian population is the fast decline in death rates. Till 1980, high birth rates and declining death rates led to a large difference between birth rates and death rates. It resulted in higher rates of population growth. After 1981, birth rates have also started declining gradually. It has resulted in a gradual decline in the rate of population growth.

Answer»

Ans :- There are three main processes of population change.

Birth ratesDeath rates andMigration.Natural increase of population is the difference between birth rates and death rates.

i. Birth rate is the number of live births per thousand persons in a year.

ii. It is a major component of growth in India because birth rates have always been higher than death rates here.

iii. Death rate is the number of deaths per thousand persons in a year.

iv. Main cause of rapid rate of growth of the Indian population is the fast decline in death rates.

Till 1980, high birth rates and declining death rates led to a large difference between birth rates and death rates.

It resulted in higher rates of population growth.

After 1981, birth rates have also started declining gradually. It has resulted in a gradual decline in the rate of population growth.

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