Explain the three components of population change in the world. Analyse the impacts of population change.

The three components of population change in the world are:

  1. Crude Birth Rate: It is referred to as a number of live births in a year per thousand of the population. It increases the population.
  2. Crude Death Rate: It is referred to as a number of deaths in a particular year per thousand of the population in a particular region. It decreases the population.
  3. Migration: It is a displacement of people from a place of origin to the place of destination. In-migration increases the population. Out-migration decreases the population.

Impacts of population change are as follows:

  1. If the population change results in high population growth, then it puts pressure on the resources leading to scarcity and other problems.
  2. Population change resulting in the decline of the population shows that the available resources are not sufficient to maintain the population.

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