: High birth and death rates; population size remains stable but low.

: Death rates fall due to better sanitation and medicine, while birth rates remain high, leading to rapid population growth.

: Birth rates begin to fall as society urbanizes and education (especially for women) increases.

The structure and evolution of any population are determined by three fundamental variables:

Demography: The Study Of Human Population Apr 2026

: High birth and death rates; population size remains stable but low.

: Death rates fall due to better sanitation and medicine, while birth rates remain high, leading to rapid population growth. Demography: The Study of Human Population

: Birth rates begin to fall as society urbanizes and education (especially for women) increases. : High birth and death rates; population size

The structure and evolution of any population are determined by three fundamental variables: : High birth and death rates