All Flashcards
What is the effect of improved sanitation on population?
Reduced disease spread, leading to lower death rates and population growth.
What is the effect of increased food production on population?
Better nutrition, leading to lower death rates and population growth.
What is the effect of medical advances on population?
Longer, healthier lives, leading to lower death rates and population growth.
How does competition affect population growth?
Increased competition for resources leads to decreased birth rates or increased death rates, limiting population growth.
How does disease affect population growth?
Disease spreads more easily in dense populations, leading to increased death rates and limiting population growth.
How do extreme weather events affect population growth?
Extreme weather events (storms, droughts, heatwaves) can cause a sudden decrease in the population.
What is the effect of improved sanitation on population?
Reduced disease spread, leading to lower death rates and population growth.
What is the effect of increased food production on population?
Better nutrition, leading to lower death rates and population growth.
What is the effect of medical advances on population?
Longer, healthier lives, leading to lower death rates and population growth.
What is the effect of a tsunami on population?
Sudden decrease in population size, regardless of the initial population.
What is the effect of a drought on population?
Limits resource availability, potentially leading to decreased birth rates or increased death rates.
What is the effect of increased competition on population?
Can lead to decreased birth rates or increased death rates as resources become scarce.
What is the effect of disease outbreak on population?
Increased death rates, especially in dense populations.
What is the effect of high birth rates and immigration on population?
Increase in population size.
What is the effect of high death rates and emigration on population?
Decrease in population size.
What is the effect of resource depletion on population?
Can lead to decreased carrying capacity and potential population decline.
What is birth rate?
Number of births per 1000 people.
What is infant mortality rate?
Number of deaths per 1000 live births.
What is immigration?
Movement into a population.
What is emigration?
Movement out of a population.
What is doubling time?
The time it takes for a population to double in size.
Define density-independent factor.
Factor limiting population growth regardless of population size.
Define density-dependent factor.
Factor limiting population growth based on population size.