Podcast
Questions and Answers
Which factor could have caused the population represented by the graph to stabilize at its carrying capacity?
Which factor could have caused the population represented by the graph to stabilize at its carrying capacity?
- A sudden loss in the food supply
- Rapid deforestation
- The finite amount of space available in the area (correct)
- A disease that swept through the population
What would happen if everyone on the planet used resources and lived the average lifestyle of an American?
What would happen if everyone on the planet used resources and lived the average lifestyle of an American?
- There would be the same number of people in less-developed countries as there are Americans.
- We would need multiple Earths for this to be possible. (correct)
- The Earth would have the carrying capacity to sustain the human population.
- The population growth rate would immediately decrease.
What type of distribution does the human population follow on a global level?
What type of distribution does the human population follow on a global level?
- Random
- Indescribable
- Uniform
- Clumped (correct)
True or false: A population can be clumped on a large scale, but uniform on a local scale.
True or false: A population can be clumped on a large scale, but uniform on a local scale.
In a city with 86,293 people, 1,853 citizens died and 1,472 babies were born in one year. What is the current growth rate of the city?
In a city with 86,293 people, 1,853 citizens died and 1,472 babies were born in one year. What is the current growth rate of the city?
How does the population pyramid of India compare to that of the United States?
How does the population pyramid of India compare to that of the United States?
True or false: Human population growth has always been exponential.
True or false: Human population growth has always been exponential.
The y-axis to the right represents __________.
The y-axis to the right represents __________.
What does the orange graph line represent?
What does the orange graph line represent?
Which of the following statements are true of logistic growth? (Select all that apply)
Which of the following statements are true of logistic growth? (Select all that apply)
Which of the following statements are true of a population at carrying capacity? (Select all that apply)
Which of the following statements are true of a population at carrying capacity? (Select all that apply)
As a population approaches carrying capacity, environmental resistance __________.
As a population approaches carrying capacity, environmental resistance __________.
Which of the following factors does not contribute to environmental resistance?
Which of the following factors does not contribute to environmental resistance?
Describe the characteristics of Graph A, B, and C representing different patterns of population growth.
Describe the characteristics of Graph A, B, and C representing different patterns of population growth.
Study Notes
Population Dynamics
- A population stabilizes at its carrying capacity primarily due to limited available space.
- If everyone lived like the average American, multiple Earths would be required to support the population.
- Human global population distribution is predominantly clumped.
Population Characteristics
- A population can be clumped on a large scale and uniform on a local scale.
- In a city with 86,293 residents, a growth rate of approximately 0.4% is calculated when 1,853 die and 1,472 are born in one year.
- India exhibits a higher potential for demographic momentum compared to the United States due to its youthful population.
Growth Trends
- Human population growth has not always followed an exponential pattern; it is not a constant trajectory.
Logistic Growth
- Logistic growth involves the population growing rapidly until reaching the carrying capacity, where growth eventually slows and rates equalize between births and deaths.
- When populations reach carrying capacity, growth rates equal zero, and birth and death rates balance.
- As the population approaches carrying capacity, environmental resistance increases.
Environmental Resistance
- Birth rate does not contribute to environmental resistance; other factors such as weather, food competition, and environmental toxins are significant.
Graph Interpretation
- Graph A depicts logistic (S-shaped) growth, while Graph B shows a fluctuating population initially outperforming carrying capacity.
- Graph C indicates a rapid increase followed by a dramatic decline in population size.
Studying That Suits You
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Description
Test your knowledge with these flashcards for AP Psychology Unit 2. Review key concepts related to population dynamics and carrying capacity. It's a great way to prepare for exams and reinforce your understanding of environmental psychology.
