INTERPRETING POPULATION PYRAMIDS You need to know: the characteristics of the 4 types of population pyramids

Population pyramids show the age/sex structure of a country Tells you what % of the population is a certain age and gender Groups put into 5 year categories (cohort) Grade 9 Geography Review

RAPIDLY EXPANDING Very high birth rate Population growing very fast (3-4% per year) Low income countries

EXPANDING High birth rate Population growing (1-2% per year) Middle to low income countries

STATIONARY Births replace deaths Population not changing much at all High income countries

DECLINING More deaths than births Population shrinking Potential social problems