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.
How does access to family planning affect population growth?
Contraception and reproductive health services can lower birth rates.
How does education, especially for women, impact birth rates?
Education for women is linked to lower birth rates.
How does industrialization affect population growth?
It leads to improved sanitation, increased food production, and medical advances, resulting in exponential population growth.
Describe the Rule of 70.
A quick way to estimate how fast a population is growing by dividing 70 by the percentage growth rate to find the doubling time.
What is the impact of resource availability on population growth?
Limited resources (food, water, territory) restrict population growth, acting as a density-dependent limiting factor.
How do natural disasters affect population size?
Natural disasters are density-independent factors that can drastically reduce population size regardless of the initial population density.
What is the relationship between human population growth and resource depletion?
Human population growth is directly linked to increased resource depletion, pollution, and habitat loss.
What is birth rate?
Number of births per 1000 people.
What is death rate?
Number of deaths per 1000 people.
Define infant mortality.
Number of deaths per 1000 live births.
What is immigration?
Movement into a population.
What is emigration?
Movement out of a population.
Define doubling time.
The time it takes for a population to double in size.
What are density-independent factors?
Factors that limit population growth regardless of population size.
What are density-dependent factors?
Factors that limit population growth based on population size.
What is population growth rate?
The rate at which a population is growing or declining.
Define annual percent change.
The net change in population size as a percentage.