The population growth or population change refers to the change in number of inhabitants of a territory during a specific period of time. This change may be positive as well as negative. It can be expressed either in terms of absolute numbers or in terms of percentage. Population change in an area is an important indicator of economic development, social upliftment and historical and cultural background of the region.

Which of the following is/are components of population change ?

All of the above

Birth rate, death rate and migration are components of population change. The first two being natural factors and the last one is an actual factor.