2.3 Study Guide Flashcards
Sex ratio
number of females vs males
Generation time
Age that females reproduce
Age structure
Number of females at reproductive age in cohort
What does a demographic transition
Compares birth/death for each stage
High birth rate
Higher proportion of children
Low birth/death rate
Higher proportion of elderly
Stage 1
Preindustrial
Preindustrial population growth
Very slow
Stage 2
Early industrial
Early industrial population growth
Rapid
Stage 3
Mature industrial
Mature industrial population growth
Slowing
Postindustrial
Very slow
Birth/death rate of preindustrial
High birth/death rate high
Birth/death rate of early industrial
High birth rate; death rate falls rapidly
Birth/death rate of mature industrial
Birth rate falling; death rate falls more slowly
Birth/death rate of postindustrial
Low birth/death rate