Unit 2 AP Human

Stage 1

Stage 1

-High BR

-High DR

-Very low natural increase rate

Stage 2

-High BR, but DR drops, Grandparents!

-Pyramid= Wide Base, thinner as you get higher

-Ex: Sub-Saharan Africa

Stage 3

-Birth rate slows down, DR the same low

-Industrialized

-Pyramid= Wider in the middle ages and have

a pear shape.

Stage 4

-birth rates get lower, death rates rise as people are getting older.

-Natural increase rates (NIR) in these countries are close to zero.

-Ex: United States

-Pyramid= Skyscraper Shape

Stage 5

-Negative rate of natural increase

-pro-natalist policies to try and stunt the population decrease by incentivizing having children.

-Upside down triangle