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.
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 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.
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.