What is the role of demography in population forecasting?

Demography is the study of human population dynamics, including fertility, mortality, and migration. Demographic data is essential for population forecasting, as it provides the basis for projecting future population size and composition. Demography also provides insights into the factors that influence population growth and migration, such as economic, social, and environmental factors. Understanding demography is crucial for accurate population forecasting and for developing effective policies and programs that address the needs of a changing population.