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Chapter 2 Key Issue 3. Lots of funny looking graphs. Demographic Transition Model. Population Growth for Human History. DTM for England. Population Pyramids. Age distribution Dependency ratio: number of people who are too young/old to work compared to the number of productive people. - PowerPoint PPT Presentation
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Lots of funny looking graphs
Chapter 2 Key Issue 3
Demographic Transition Model
Population Growth for Human History
DTM for England
Age distributionDependency ratio: number of
people who are too young/old to work compared to the number of productive people.
0-14 and 65+ are dependent15-64 are productive
Sex ratioNumber of females and males in a
population
Population Pyramids
Highest Percentages of U15
Cape Verde
Notice the very large gap between birth and death rates since 1950. Indicative of Stage 2.
Chile
Notice the very large gap between birth and death rates 1930-1960 and the corresponding decrease in birth rate in 1960. Indicative of Stage 3.
Denmark
Notice the very large gap between birth and death rates 1830-1890 (Stage 2); decline in birth rate 1890-1970 (Stage 3) and “zero population growth” since 1980.
Guess where…
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