If births are high but many people move out, what effect can occur on total population growth?

Correct answer: Growth may reduce

Direct answer: Option A is correct. Total population change depends not only on births and deaths but also on migration. Births add people, while people moving out, called out-migration, remove people from the area. In simple terms, total change is affected by births minus deaths plus people entering minus people leaving. Therefore, even when births are high, a large number of people leaving can reduce the increase, make growth small, or in some cases cause the population to fall. Option B is wrong because no population growth is automatically infinite. Option C is wrong because migration does not change the physical area of a place. Option D is wrong because people moving out has no necessary effect of making deaths zero. The exact result depends on the relative sizes of births, deaths, arrivals and departures. Memory cue: births add, deaths subtract, arrivals add, and departures subtract.