Podcast
Questions and Answers
Which of the following best describes the shape of the population pyramid?
Which of the following best describes the shape of the population pyramid?
- Expanding (correct)
- Stationary
- Contracting
- None of the above
Based on the shape of the population pyramid, what can be inferred about life expectancy in this population?
Based on the shape of the population pyramid, what can be inferred about life expectancy in this population?
- Life expectancy is very low.
- Life expectancy is very high.
- Life expectancy cannot be determined from the population pyramid.
- Life expectancy is relatively average. (correct)
What does the narrow top of the population pyramid suggest about the proportion of elderly individuals in this population?
What does the narrow top of the population pyramid suggest about the proportion of elderly individuals in this population?
- An equal proportion of elderly and young individuals.
- A small proportion of elderly individuals. (correct)
- The proportion of elderly individuals cannot be determined from the pyramid.
- A large proportion of elderly individuals.
What is the difference between density-dependent and density-independent limiting factors?
What is the difference between density-dependent and density-independent limiting factors?
Suppose the population pyramid changes to have a more rectangular shape. What would this likely indicate about the population?
Suppose the population pyramid changes to have a more rectangular shape. What would this likely indicate about the population?
Which of the following is NOT a density-dependent limiting factor?
Which of the following is NOT a density-dependent limiting factor?
Which of the following is NOT a possible reason for the shape of the given population pyramid?
Which of the following is NOT a possible reason for the shape of the given population pyramid?
What is the carrying capacity of a population?
What is the carrying capacity of a population?
What type of growth pattern is represented by the data provided for the population of Bilon?
What type of growth pattern is represented by the data provided for the population of Bilon?
What happens to a population's growth rate when the birth rate exceeds the death rate?
What happens to a population's growth rate when the birth rate exceeds the death rate?
What characteristic is most likely associated with developed countries based on demographic trends?
What characteristic is most likely associated with developed countries based on demographic trends?
In examining population pyramids, which of the following features would suggest a developed country?
In examining population pyramids, which of the following features would suggest a developed country?
What does a population pyramid with a higher proportion of adults suggest about a country's development?
What does a population pyramid with a higher proportion of adults suggest about a country's development?
What implication does a demographic shift toward an aging population in a country have?
What implication does a demographic shift toward an aging population in a country have?
If a country exhibits low birth rates and high life expectancy, what classification would it likely fit into?
If a country exhibits low birth rates and high life expectancy, what classification would it likely fit into?
What age group has the highest population based on the information provided?
What age group has the highest population based on the information provided?
Which age range is most likely associated with a low birth rate?
Which age range is most likely associated with a low birth rate?
Which age category is NOT typically used to analyze population demographics?
Which age category is NOT typically used to analyze population demographics?
If the data displays a large population in the 80-84 age range, what demographic trend might this suggest?
If the data displays a large population in the 80-84 age range, what demographic trend might this suggest?
Which of these age groups would most likely experience the highest mortality rates?
Which of these age groups would most likely experience the highest mortality rates?
What factor might contribute to a declining population in the 25-29 age group?
What factor might contribute to a declining population in the 25-29 age group?
What does a significant population in the 55-59 age group indicate about future demographic trends?
What does a significant population in the 55-59 age group indicate about future demographic trends?
How might the distribution impacts public services for elderly care?
How might the distribution impacts public services for elderly care?
Flashcards
Population Pyramid
Population Pyramid
A graphical representation of the age and sex distribution of a population.
Developed Country
Developed Country
A country with a high level of economic development and quality of life.
Demographic Transition
Demographic Transition
The transition from high birth and death rates to lower birth and death rates as a country develops.
Birth Rate
Birth Rate
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Age Distribution
Age Distribution
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Limiting Factors
Limiting Factors
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Carrying Capacity
Carrying Capacity
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Density Dependent
Density Dependent
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Population Density
Population Density
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Logistic Growth
Logistic Growth
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Exponential Growth
Exponential Growth
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Demographic Indicators
Demographic Indicators
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Developed Country Characteristics
Developed Country Characteristics
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Total Fertility Rate
Total Fertility Rate
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Life Expectancy
Life Expectancy
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Dependency Ratio
Dependency Ratio
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Study Notes
Population Vocabulary
- Limiting Factors: Factors that restrict population growth. Examples include competition, disease, predation, natural disasters, and pollution.
- Carrying Capacity: The maximum population size that an environment can sustain indefinitely, given the available resources.
- Density Dependent: Factors whose impact on a population depends on the population's density. Examples include competition, disease, and predation.
- Density Independent: Factors whose impact on a population is not dependent on population density. Examples include natural disasters and climate change.
- Population Density: The number of individuals per unit area.
- Population Distribution: How a population is spaced out in a given area.
Population Growth Graphs
- Exponential Growth: Population growth with unlimited resources, resulting in a J-shaped curve on a graph.
- Exponential vs. Logistic Growth: Exponential growth assumes unlimited resources while logistic growth considers the carrying capacity of the environment.
- Logistic Growth: Population growth that levels off as the population approaches the carrying capacity, creating an S-shaped curve on a graph.
- Carrying Capacity on a Graph: The point where the population growth curve levels off, showing the maximum sustainable population size.
- Birth Rate Higher than Death Rate: The overall population increases.
- Death Rate Higher than Birth Rate: The overall population decreases.
Population Pyramids
- Stable Population Pyramid Shape: A pyramid with a roughly consistent shape across age groups, indicating a relatively stable growth rate and a low birth and death rate in a developed country.
- Rapid Growth Population Pyramid Shape: A pyramid with a wider base than the top, indicating a higher proportion of younger people and a higher birth rate in a developing country.
- Developed vs. Developing Countries: Developed countries generally have lower birth rates, higher life expectancy, and better access to healthcare compare to Developing countries with higher birth and death rates.
Survivorship Curves
- Survivorship Curve: A graph showing the number of individuals in a population that survive over a specific time period.
- Type I Survivorship: High survival rate in younger, low survival rate in later life. Examples include humans and elephants.
- Type II Survivorship: Survivability declines at a fairly constant rate throughout the lifetime. Examples include birds, or rodents.
- Type III Survivorship: High death rate in the initial stage of life, low death rate later. Examples include oysters, and sea turtles.
Fertility Rate
- Total Fertility Rate (TFR): The average number of children a woman is expected to have during her lifetime.
- Factors affecting TFR: Education, access to family planning, government policies, and available resources.
- Usefulness of TFR: Predicting future population trends.
Mitosis vs. Meiosis
- Mitosis: Cell division that produces two identical daughter cells, for growth and repair.
- Meiosis: Cell division that produces four genetically unique daughter cells, for sexual reproduction.
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