A. Continued population growth after fertility reaches replacement level due to young age structure
B. Mass migration events
C. Sudden increase in life expectancy
D. Rapid urbanization
Answer: Option A
Solution (By JKExamLibrary)
Population momentum occurs when a young age structure (many future parents) causes growth to continue for decades even after fertility falls to replacement level, as births exceed deaths temporarily.
Explanation:
Life expectancy is a period measure derived from a life table, representing the mean survival time for a hypothetical cohort experiencing current age-specific death rates throughout life.
Explanation:
SDR eliminates age structure effects by calculating what the death rate would be if the population had the age distribution of a standard population, enabling unbiased mortality comparisons.
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