demography
时间：2026-10-30 14:50:04来源：Demography is the study of populations, focusing on their size, structure, and distribution. It examines factors such as birth rates, death rates, migration, and age composition to understand population trends over time.
| Key Concepts | Description |
| Population Size | Total number of people in a given area. |
| Age Structure | Distribution of different age groups within a population. |
| Fertility Rate | Average number of children per woman. |
| Mortality Rate | Number of deaths per 1,000 people. |
| Migration | Movement of people between regions or countries. |
Demography plays a crucial role in policy-making, resource allocation, and economic planning. By analyzing demographic data, governments and organizations can better address social needs and anticipate future challenges.
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