5.4 population Flashcards
Define population
total number of people inhabiting a specific area.
3 main factors that impact population
Birth rates
Death rates
Net migration
Define birth rate
how is it expressed
average number of children born in a country each year compared to the total population of an economy
number of births for every 1000 people in the population
Define death rate
the number of people who die each year compared to every 1000 people of the population
Define net migration
measures the difference between the immigration and emigration to and from an economy.
2 cases of net migration
net inward migration
net outward migration
Adv and disadv of net inward migration
increase the working population of the economy
More taxes
cons:
pressure on governments finances as demand for housing, education and welfare increase.
GPD per capita may decrease
May have to spend more on welfare benefits
Adv disadv of net outward migration
Increase in income per capita (if the emigrants send money back home)
HDI may increase
cons:
Loss in taxes
Loss in skilled workers
Factors that influence birth rate
briefly explain each
Living standards - if poor then parents have more kids incase a few die since kids work to produce food, income, etc - birthrates increase. Vice versa
contraception + legalised abortion- reduced birth rates in developed countries - birthrates decrease
Customs - not fashionable to have large families now. birth rates decrease
Religion - some don’t allow the use of contraception and abortion so birth rates increase
Changes in female employment - women don’t want motherhood interfering with career - developed countries - birthrate has reduced
Marriage - people are marrying later - birthrate reduces
Why would people migrate
Living standards - migrate from lower to higher
Emploment/wages - seek better job opportunities.
Climate - Extreme climate countries face more emigration than others
What is overpopulation
A situation where there are too many people and too few resources
What is the dependency ratio
Measures the dependent population to total working population
dependent population/working population
What is the dependent population
Part of the population that is not included in the labour force and hence depends on the labour force to provide goods and services to fulfil their needs and wants.
Analyze a dependent ratio of x
Every working person is not only supporting himself, but also x other people who are not in work
Eg of people in dependent population
Elderly
Children
Stay at home spouses
Prisoners