Advanced Placement (AP) Human Geography Practice Exam 2026 – The Comprehensive All-in-One Study Guide for Exam Success

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What is meant by the term "replacement level" in population studies?

The minimum number of births necessary to maintain a population

The population level necessary to assure the population continues to replace itself

The term "replacement level" in population studies refers specifically to the population level necessary to assure the population continues to replace itself. This concept is crucial in understanding demographic dynamics. The replacement level is typically quantified as the total fertility rate at which a population exactly replaces itself from one generation to the next, without migration considered. For most countries, this is approximately 2.1 children per woman, which accounts for the slight excess needed to cover infant mortality and ensure the population size remains stable over time.

This concept is significant in examining the long-term sustainability of a population's size, as well as its potential for growth or decline. It allows demographers and policymakers to assess whether current birth rates are sufficient to maintain or alter the population dynamics in the context of social and economic conditions.

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The ideal population size for resource sustainability

The maximum limit of population growth without depletion of resources

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