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How and why do rates of population change vary over time? Populations change as result of variations in the BR and DR, plus/minus migration. The DEMOGRAPHIC.

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Presentation on theme: "How and why do rates of population change vary over time? Populations change as result of variations in the BR and DR, plus/minus migration. The DEMOGRAPHIC."— Presentation transcript:

1 How and why do rates of population change vary over time? Populations change as result of variations in the BR and DR, plus/minus migration. The DEMOGRAPHIC TRANSITION MODEL describes how BR and DR change over time. It was developed from a study in England & Wales and Sweden. It has since been applied universally.

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3 DTM Ukraine

4 DTM Kenya – Which Stage?

5 DTM Italy – Which Stage?

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8 YEAR Millions of people 6000 0 3000 4000 5000 2000 1000 20001100 Slow growth 1650 Increase in growth 1820 1930 EXPLOSION 1960 1974 1987 POPULATION EXPLOSION?

9 Mr and Mrs Mroue go to a family planning clinic for the first time Abdu Ahmad loses his job as a gravedigger Children feel cosier in bed at night because they have more brothers and sisters Somebody has started an aerobics class for the over 70s A lot more houses are being built Mrs Ezzedine cries over the grave of her son, the third of her children that has died in a typhoid epidemic Few children have grandparents People are encouraged to look for work overseas The public health inspector smiles as the building of the new sewers is finished Fewer children share a bedroom


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