Processes of Population Change

Natural increase is decided by the gap between birth and death rates. Exam tip: do not conclude from one rate only.

A falling death rate alone does not ensure total growth. Exam tip: add births and migration too.

Family planning helps individuals and couples decide the number and spacing of their children. It can affect when births occur and may reduce unintended or closely spaced births. In population-change analysis, births are one of the direct components that add people to a population. Family planning does not directly move people across a boundary, change the area of a region, or itself constitute international migration.

Option A is correct because family planning most directly influences the birth process and, over time, the birth rate. Its wider effects may include changes in family size, health, and population structure, but the immediate demographic link is with births. Options B, C, and D identify processes that are not the direct target of family-planning decisions. The answer follows from matching the policy with the component it directly affects.

Better health facilities can reduce death rate. Exam tip: connect health improvement with the death component.

Job opportunities can pull outsiders into the city. Exam tip: keep effects of birth rate and migration separate.

If out migration exceeds natural increase local population can decline. Exam tip: include migration in total change.

Natural increase is 1600 and net migration is negative 600 so total growth is 1000. Exam tip: calculate both components separately.

Rural to urban migration increases urban population and speeds urbanisation. Exam tip: write the link between migration and urbanisation.

Births and deaths are biological processes while migration is linked with changing place. Exam tip: identify the type of process.

Rate may be low but a large base group can raise total number. Exam tip: understand rate and actual number separately.

Youth out migration can reduce reproductive age group. Exam tip: connect migration with age structure.

Total number may remain stable but age group shares can change. Exam tip: keep size and structure separate.

Total change is decided by births deaths and migration together. Exam tip: do not conclude from one component only.

Natural increase is 700 but negative migration is 1000 so total decline is 300. Exam tip: migration can outweigh natural increase.

Data of all processes and period is needed to measure change. Exam tip: do not conclude from incomplete data.

The governing concept is the time scale of demographic change. A change is a difference between two measured situations, so the starting and ending dates are essential. Saying that a population increased by a particular amount is incomplete unless we know whether the increase occurred in one year, ten years or a much longer period. Rates and comparisons can be especially misleading when the periods differ. Option A is correct because population change is always interpreted over a stated interval. Option B is false, while C misunderstands migration and D wrongly dismisses deaths, which are part of population change.

Youth out migration can affect rural society and labour availability. Exam tip: write social effects of migration.

Urban in migration affects administrative planning by increasing service demand. Exam tip: write urban service pressure.

Natural change is negative 300 and net migration is 700 so total growth is 400. Exam tip: combine both components separately.

Migration can reduce people from source area and add them to destination area. Exam tip: remember two sided local effect of migration.