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How and why do rates of population change vary over time?

How and why do rates of population change vary over time?.

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How and why do rates of population change vary over time?

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  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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  5. Millions of people 6000 POPULATION EXPLOSION? 1987 5000 1974 4000 1960 3000 2000 1930 1820 1650 1000 EXPLOSION Increase in growth Slow growth 0 1100 2000 YEAR

  6. Abdu Ahmad loses his job as a gravedigger 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 Mr and Mrs Mroue go to a family planning clinic for the first time Children feel cosier in bed at night because they have more brothers and sisters Few children have grandparents People are encouraged to look for work overseas Somebody has started an aerobics class for the over 70s The public health inspector smiles as the building of the new sewers is finished Fewer children share a bedroom

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