Biology 2e
Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Chapter 45, Problem 38CTQ

Since the introduction of the Endangered Species Act the number of species on the protected list has more than doubled. Describe how the human population’s growth pattern contributes to the rise in endangered species.

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List and describe the four main human-induced threats to species.
Which of the following is not a part of the red list criteria for "critically endangered" species?     The population is expected to decline by 25% or more within 3 years or 1 generation.   The species has a restricted range <100km2 at a single location and there is observed or predictive habitat loss, fragmentation, ecological imbalance or heavy commercial pollution.   Extinction probably is greater than 50% within 10 years or 3 generations.   The total population size is less than 200 mature individuals.
List two ways exotic species are introduced to a new habitat and list two consequences of it becoming an invasive species that takes over a habitat.

Chapter 45 Solutions

Biology 2e

Ch. 45 - Species with limited resources usually exhibit...Ch. 45 - The maximum rate of increased characteristic of a...Ch. 45 - The population size of a species capable of being...Ch. 45 - Species that have many offspring at one time are...Ch. 45 - A forest fire is an example of regulation....Ch. 45 - Primates are examples of: density-dependent...Ch. 45 - Which of the following statements does not support...Ch. 45 - Which of the following events would not negatively...Ch. 45 - A country with zero population growth is likely to...Ch. 45 - Which type of country has the greatest proportion...Ch. 45 - Which of the following is not a way that humans...Ch. 45 - The first species to live on new land, such as...Ch. 45 - Which type of mimicry involves multiple species...Ch. 45 - A symbiotic relationship where both of the...Ch. 45 - Which of the following is not a mutualistic...Ch. 45 - The ability of rats to learn how to run a maze is...Ch. 45 - The training of animals usually involves...Ch. 45 - The sacrifice of the life of an individual so that...Ch. 45 - Why are polyandrous mating systems more rare than...Ch. 45 - Describe how a researcher would determine the size...Ch. 45 - The CDC released the following data in its 2013...Ch. 45 - Why is long-term parental care not associated with...Ch. 45 - Describe the difference in evolutionary pressures...Ch. 45 - Describe the rate of population growth that would...Ch. 45 - Describe how the population of a species that...Ch. 45 - Give an example of how density-dependent and...Ch. 45 - Describe the age structures in rapidly growing...Ch. 45 - Since the introduction of the Endangered Species...Ch. 45 - Describe the competitive exclusion principle and...Ch. 45 - Jaguars are a keystone species in the Amazon....Ch. 45 - Describe Pavlov’s dog experiments as an example of...Ch. 45 - Describe the advantage of using an aural or...
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