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Questions and Answers
What is the term for the number of individuals in a population?
What is the movement of individuals into or out of a population called?
What type of growth model assumes a constant rate of growth?
What is the average number of children a woman would have in her lifetime called?
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What is the graphical representation of a population's age and sex distribution called?
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What theory states that population growth is limited by resource availability?
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What is the probability of death at a given age called?
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What is the average number of years an individual is expected to live called?
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Study Notes
Definition of Population
- A population is a group of individuals of the same species living in a specific geographic area.
- It can refer to humans, animals, or plants.
Population Characteristics
- Size: The number of individuals in a population.
- Density: The number of individuals per unit area.
- Distribution: The way individuals are spread out across a geographic area.
- Composition: The characteristics of the population, such as age, sex, and occupation.
Population Dynamics
- Birth rate: The number of births per 1,000 individuals in a population per year.
- Death rate: The number of deaths per 1,000 individuals in a population per year.
- Migration: The movement of individuals into or out of a population.
- Growth rate: The rate at which a population increases or decreases in size.
Population Growth Models
- Exponential growth: A model that assumes a constant rate of growth.
- Logistic growth: A model that assumes a slowing of growth as the population approaches its carrying capacity.
Population Pyramids
- A graphical representation of the age and sex distribution of a population.
- Broad base: A large number of individuals in the younger age groups.
- Narrow top: A small number of individuals in the older age groups.
Population Parameters
- Fecundity: The average number of children a woman would have in her lifetime.
- Mortality rate: The probability of death at a given age.
- Life expectancy: The average number of years an individual is expected to live.
Population Theories
- Malthusian theory: The idea that population growth is limited by resource availability.
- Demographic transition theory: The idea that population growth slows as a country develops economically.
Definition of Population
- A population is a group of individuals of the same species living in a specific geographic area, and it can refer to humans, animals, or plants.
Population Characteristics
- The size of a population is the number of individuals in it.
- Population density is the number of individuals per unit area.
- Distribution refers to the way individuals are spread out across a geographic area.
- Composition includes characteristics of the population, such as age, sex, and occupation.
Population Dynamics
- Birth rate is the number of births per 1,000 individuals in a population per year.
- Death rate is the number of deaths per 1,000 individuals in a population per year.
- Migration is the movement of individuals into or out of a population.
- Growth rate is the rate at which a population increases or decreases in size.
Population Growth Models
- Exponential growth assumes a constant rate of growth.
- Logistic growth assumes a slowing of growth as the population approaches its carrying capacity.
Population Pyramids
- A population pyramid is a graphical representation of the age and sex distribution of a population.
- A broad base represents a large number of individuals in the younger age groups.
- A narrow top represents a small number of individuals in the older age groups.
Population Parameters
- Fecundity is the average number of children a woman would have in her lifetime.
- Mortality rate is the probability of death at a given age.
- Life expectancy is the average number of years an individual is expected to live.
Population Theories
- The Malthusian theory claims that population growth is limited by resource availability.
- The demographic transition theory suggests that population growth slows as a country develops economically.
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Description
Learn about the concept of population, its size, density, distribution, and composition in a specific geographic area. Understand the characteristics of a population, including age, sex, and occupation.
