Which term describes the process of population characteristics changing over time, such as size, age structure, and composition?

• A. Demographic Change
• B. Wolfe
• C. Bicultural
• D. Emigration

Answer: (A)

Demographic change describes how a population's size, age structure, and overall composition change over time. This happens through births, deaths, and migration. When birth rates are high and people live longer, the population grows and tends to be younger. If birth rates fall and people live longer, the population often ages and growth slows. Migration—people moving in or out—also shifts how many people there are and who makes up the population. The other terms don’t capture these changes: bicultural refers to having two cultures, and emigration means people leaving a country, not how a population changes over time.