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Which of the following statements is true of a population at carrying capacity?
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50. Population Ecology
Introduction to Population Ecology
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How do age-structure diagrams predict the growth of a population?
A
By illustrating the migration patterns of a population, which directly influence growth.
B
By highlighting the current population size, which determines future growth potential.
C
By showing the proportion of individuals in different age groups, indicating potential for future growth.
D
By displaying the genetic diversity within a population, which affects growth rates.
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Understand the concept of age-structure diagrams: These diagrams are graphical representations that show the distribution of various age groups in a population. They are typically divided into pre-reproductive, reproductive, and post-reproductive age categories.
Recognize the significance of age groups: The proportion of individuals in each age group can indicate the potential for future population growth. A larger proportion of individuals in the pre-reproductive and reproductive age groups suggests a higher potential for population growth.
Analyze the shape of the age-structure diagram: Different shapes can predict different growth trends. For example, a pyramid shape with a wide base indicates a growing population, while a more rectangular shape suggests stable growth.
Consider the implications of age distribution: A population with a high percentage of young individuals is likely to grow rapidly as these individuals reach reproductive age. Conversely, a population with a higher percentage of older individuals may experience slower growth or decline.
Evaluate external factors: While age-structure diagrams provide insights into potential growth, other factors such as migration, birth rates, and death rates also play crucial roles in determining actual population growth.
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