The student is asked to analyze changes in the population structure of either Japan, Niger, or Thailand from 2000 to 2050 using population pyramids downloaded from provided websites. In one page or less, the analysis should comment on aspects of population structure like overall shape, age and gender proportions, dependency ratios, and population momentum, as well as changes over time, possible reasons for changes, and implications for the country. The student is advised to focus on different aspects of population structure and how it changes from 2000 to 2050.