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Population and resources revision
Introduction to population and resources
Birth rate- no. of children born per 1000 per year
Death rate- no. of deaths per 1000 per year
Fertility rate- average no. of children a woman has in her lifetime
Infant mortality rate- no. of deaths of children in their 1st year, per 1000
Calculating population change
Population change is calculated by birth rate minus death rate, plus or minus net
migration (in-migration minus out-migration)
Population change= (BR-DR) +/- net migration
Difference between birth date and fertility rate
Birth rate is based on how many children are born per 1000 per year whereas
fertility rate is how many children a woman has in her lifetime. Birth rate is based
on average per country and fertility rate is based on average per person.
Birth rate and death rate are poor indicators of development
Both based on population structure of a country. Birth rate is a poor indicator as
countries with a higher percentage of young people would appear to have higher
birth rates as more of those 1000 people could have children. Therefore younger
populated countries could be seen as less developed as they have higher birth
rates which traditionally are an indicator of low development.
Death rate is a poor indicator as countries with ageing populations will have higher
death rates as more of those 1000 people will be older. Therefore ageing
populations could be seen as less developed as it would appear that the country
will have more people dying, whereas the rates may not actually be different to
other developed countries.
World's population is falling despite a increasing population growth rate.
This is because population momentum is continuing. There are a higher percentage
of young people so more young people will mean more children even though on
average women are having fewer children.