What demographic feature is likely indicated by an asymmetrical population pyramid?

An asymmetrical population pyramid often indicates a demographic feature related to migration patterns, particularly the presence of a large guest-worker population. This can occur in regions where there is a significant influx of workers from other countries, which can lead to an uneven distribution of age and sex within the population.

For example, if a region relies heavily on guest workers, often younger adults, the population pyramid may reflect a disproportionate number of males compared to females or an increase in specific age cohorts, depending on the demographic characteristics of the migrant population. This asymmetry illustrates how guest workers can affect the overall structure of the population, leading to unique demographic patterns that differ from those seen in stable or less mobile populations.

In contrast, other options like a high birth rate or a declining population typically result in more symmetrical pyramids: a high birth rate would show a broad base, while a declining population might display a narrower base and wider middle-age structures. A young age structure can also present a more balanced or symmetrical profile, as it indicates a growing youth population rather than the skewed patterns associated with significant migration flows.