Please enable JavaScript.
Coggle requires JavaScript to display documents.
4.2 Factors that Affect Population Growth (Mortality (Have recently been…
4.2 Factors that Affect Population Growth
Fertility
.
TFR's are higher in less developed nations
High infant mortality rate
No pensions means having more children to ensure support
Lower cost of education and raising a child
Children are part of the labor force
Total Fertility Rate: AVG number of children born to women of childbearing age in a population, over their lifetime
Mortality
Have recently been declining, leading to higher growth despite growth rate declining too
Decreased due to better hygiene, medicine, and nutrition
Life expectancy serves as an indicator for overall population health
Women tend to have higher life expectancies due to less likeliness to experience high stress, lower war involvement chances, accident prone industries, gangs, do drugs, and dangerous pastimes
Infant Mortality rates are declining They also help gauge overall health.
Population Change Formula
Can use crude rates (deaths/births per 1000 people in a given year)
Births+ Immigration - (Deaths+Emigration)
Migration
Jobs and Economic Security
Freedom from oppression, conflict, etc
Environmental reasons
Population crashes affect humans greatly
Ex: potato blight in Ireland cause 1 million deaths and millions of emigrations.
Emigration vs. Immigration