Question

3. What is population change? Explain the three components of population change?
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Answer 1

Answer:

The main components of population change are births, deaths, and migration. “Natural increase” is defined as the difference between live births and deaths. “Net migration” is defined as the difference between the number of people moving into an area and the number of people moving out.

Answer 2

Answer:

population change defined generally is the difference in the size of population between the end and the beginning of a given time period is ( usually one year). specifically it is the difference in population size on 1 January of two consecutive years.

The three components of population change are :

1,Birth - The crude birth rate (CBR) is expressed as number of live births in a year per thousand a woman .

2,Death rate - Death rate places an active role in population change . population growth occurs not only by increasing birth rate but also due to decreasing death rate .

3, Migration - Migration may be permanent , temporary or seasonal . It may take place from rural to rural areas ,rural to urban areas ,urban to urban areas , urban to rural areas .