APES Unit 3: Populations

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What is the Infant Mortality Rate (IMR)?

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The Infant Mortality Rate (IMR) is the number of deaths of infants under one year old per 1,000 live births in a given year. It is an important indicator of the health care system and overall health of a population.

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What does Life Expectancy indicate?

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Life Expectancy is the average number of years a person is expected to live based on current mortality rates. It reflects the overall health and longevity of a population.

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Define Logistic Growth in populations.

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Logistic Growth is a model of population growth that shows how a population grows rapidly at first, then slows as it approaches the carrying capacity of its environment.

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What is Carrying Capacity?

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Carrying Capacity is the maximum number of individuals of a species that an environment can sustainably support without degrading the habitat.

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What is Total Fertility Rate (TFR)?

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Total Fertility Rate (TFR) is the average number of children a woman is expected to have during her childbearing years, typically defined as ages 15-49.

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How is population size estimated?

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Population size can be estimated using the formula: Population = CBR + Immigration - CDR - Emigration.

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What does a TFR of 2.1 indicate?

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A TFR of 2.1 is considered the replacement level fertility, meaning that each woman, on average, needs to have 2.1 children to maintain the population size.

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What is Exponential Growth in populations?

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Exponential Growth is a model of population growth where the population increases at a constant rate, leading to a rapid increase in size without environmental constraints.

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What is the significance of the Crude Birth Rate (CBR)?

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The Crude Birth Rate (CBR) is the number of live births per 1,000 people in a population per year. It helps assess population growth.

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What does the term Emigration mean?

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Emigration refers to the act of leaving one's resident country with the intent to settle elsewhere.