Final answer:
Developing nations have more youthful populations than do developed nations.
Step-by-step explanation:
Generally, because of higher birth rates, developing nations have more youthful populations than do developed nations. This is because developing nations tend to have higher birth rates, which leads to a larger proportion of young people in the population. In contrast, developed nations tend to have lower birth rates and a higher proportion of middle-aged and elderly individuals. This difference in age distribution can have significant implications for the social and economic development of a country.