Campbell Biology (11th Edition)
Campbell Biology (11th Edition)
11th Edition
ISBN: 9780134093413
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece
Publisher: PEARSON
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Chapter 53, Problem 8TYU

During exponential growth, a population always

  • (A) has a constant per capita population growth rate.
  • (B) quickly reaches its carrying capacity.
  • (C) cycles through time.
  • (D) loses some individuals to emigration.
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A population’s carrying capacity(A) may change as environmental conditions change.(B) can be accurately calculated using the logistic growth model.(C) increases as the per capita population growth rate decreases.(D) can never be exceeded.
Based on current growth rates, Earth’s human population in2019 will be closest to(A) 2.5 million.(B) 4.5 billion.(C) 7.5 billion.(D) 10.5 billion
1.) At approximately what year did the human population enter an exponential growth phase? 2.) Prior to that time, what was the approximate carrying capacity of Earth? 3.) State three significant technological developments that have acted to increase the carrying capacity of Earth’s environment since that time. 4.) Provide two examples of density-dependent factors that are contributing to or have the potential to contribute to environmental resistance in human populations.

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Campbell Biology (11th Edition)

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POPULATION REGULATION AND LIMITING FACTORS | DENSITY INDEPENDENT AND DENSITY DEPENDENT FACTORS; Author: BioVidyalaya;https://www.youtube.com/watch?v=mB-AB-5Wnhs;License: Standard YouTube License, CC-BY
Population growth; Author: SiouxScience;https://www.youtube.com/watch?v=XnaC9iOumVA;License: Standard YouTube License, CC-BY