Factors that Affect Population
What is total fertility rate?
The average amount of children a woman is expected to have in her lifetime.
What is carrying capacity?
The maximum population that an ecosystem can support.
What does a growing population have more of?
Young people.
What are density dependent factors?
Factors that vary on population size.
What is demographic transition?
The population stages that societies go through from beginning to end.
What are some factors that influence total fertility rate?
Education, government policies, family planning services, healthcare, societal advancement.
What is an example of a calamity caused by lack of resources?
Irish potato famine.
What is the purpose of an age structure diagram?
To interpret population growth rate by the shape of the diagram.
What are density independent factors?
Factors that don't rely on population.
What is stage 1 of the demographic transition model?
Birth and death rate are equal.
What is family planning?
Contraceptives, healthcare options for limiting or expanding family.
What happened in the potato famine?
Potatoes became infected with blight, lack of resources, carrying capacity decreased, mortality increased.
What is the structure of a rapidly growing population?
Triangle.
What factors affect if a population is shrinking?
Diseases, family planning, natural disasters, more education.
Birth rates remain high while death rates drop.
Stage 2.
Where is infant mortality rate highest?
Underdeveloped countries.
What is the equation for growth rate?
(BR + IR) - (DR + ER) = GR
What is the structure of a non-growing population?
Box.
What factors affect if a population is growing?
Less opportunities for women, more healthcare, more resources.
In which stage do birth rates start to slow down?
Stage 3.
What is fecundity?
The POTENTIAL children a woman could have.
What is crude rate?
Rate adjusted for population size, subtract crude birth from crude death.
What is the structure of a negative growth population?
What is population momentum?
Inertia of population growth even with replacement level fertility rate due to many potential parents.
What happens during stage 5 of the demographic transition model?
Birth and death rates level out.