Ways of measuring Population:
- Life expectency: the average age at which people die
- Infant Mortality: the number of children under the age of one year who die per 1000 births in a year
- Fertility Rate: the number of children that women have in their life time. (Fewer than two means the population will eventually fall)
FOOTNOTE
The study of population is known as demography. So if a question asks for 'demographic changes', these are changes in population.
Fertility rates are high in Africa. But infant mortality is high and life expectancy is low because of poor sanitation, diet and disease.
Fertility rates are low in many european countries due to economic uncertainty. In some countries the death rate has increased because the population is getting older because of rising health problems- alcohol, drugs and tobacco.
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