Question

Describe the factors that cause changes in the size of population.

Answer 1

the factors that cause change in the size of population are as follows:

a) Birth rate

b) Death rate

c) Migration

a) birth rate is the number of live birth in year per 1000 of the population of an area ,at present the birth rate in India is 21.8 .

b) death rate is the number of deaths in a year per 1000 the population of an area at ,present the death rate of India is 7.1 .

c) migration refers to the process of moving from one place to another permanently or for a longer period of time it affect the change in number of distribution and composition of the population both in the area of departure and arrival.