Demographic Transition Model – AP Environmental Science

1. In Stage 2, rapid growth occurs because:

Birth rate rises sharply Death rate drops while birth rate stays high Both rates drop equally Immigration increases

2. Stage 4 is characterized by:

High birth and death rates Low birth and death rates High birth, low death Low birth, high death

3. Natural increase rate equals:

CBR + CDR CBR - CDR CBR / CDR CDR - CBR