Podcast
Questions and Answers
Which of the following factors can contribute to population growth?
Which of the following factors can contribute to population growth?
- Increased immigration (correct)
- Low birth rate
- Emigration
- Disease outbreaks
Which of the following is an example of a density-dependent factor affecting population size?
Which of the following is an example of a density-dependent factor affecting population size?
- Climate change
- Competition for resources (correct)
- Natural disasters
- Predation
What is the primary cause of population decline?
What is the primary cause of population decline?
- Increased immigration
- Disease outbreaks
- High birth rate
- Emigration (correct)
Flashcards
Increased immigration
Increased immigration
Movement of individuals into a population from another area or country, leading to population increase.
Density-dependent factor
Density-dependent factor
A factor where the effect on population size depends on the population density, like increased competition when resources are limited.
Emigration
Emigration
Movement of individuals out of a population to another area or country, leading to population decrease.
Study Notes
Population Growth and Decline
- Factors contributing to population growth include high birth rates, low death rates, and immigration.
- Density-dependent factors, such as disease, predation, and competition for resources, can affect population size.
- An example of a density-dependent factor is a disease outbreak that spreads more easily in a densely populated area.
- The primary cause of population decline is typically high death rates, low birth rates, or emigration.
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