The population pyramid shown represents a location that has been affected by human migration.

A. Explain why the location of public institutions may result in the particular age structure shown in the population pyramid.

B. Describe ONE demographic pull factor that would motivate a female migrant from a rural area to move to an urban area in a very distant location.

C. Explain ONE reason why the female population age 80 and over is larger than the male age-80-and-over population.

D. Explain ONE limitation of the population pyramid shown in illustrating the push and pull factors of migration in this location.