BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Chapter 58, Problem 5S
Summary Introduction
To discuss:
The small population size causes extinction or some other factors lead to the extinction of small population.
Introduction:
The term extinction in biology refers to the death of the last individual of the species. After extinction, the species gets terminated forever. The
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In your region, what species are threatened with extinction? Why are they vulnerable? Suggest steps that could be taken to increase their populations.
Low population size is probably the single best predictor of extinction risk. Why are small populations generally at much greater risk of extinction than larger populations?
How does extirpation differ from extinction?
Group of answer choices
Extinction and extirpation are the same thing.
Extirpation is the loss of a single population, while extinction is the loss of an entire species.
Extinction only happens during a mass extinction.
Extinction is the loss of a single population, while extirpation is the loss of an entire species.
Chapter 58 Solutions
BIOLOGY
Ch. 58.1 - Describe the history of extinction through time.Ch. 58.1 - Prob. 2LOCh. 58.2 - Prob. 1LOCh. 58.2 - Prob. 2LOCh. 58.3 - Prob. 1LOCh. 58.3 - Explain how these causes can interact to bring...Ch. 58.4 - Prob. 1LOCh. 58.4 - Describe the potential roles of natural selection...Ch. 58.4 - Prob. 3LOCh. 58.5 - Prob. 1LO
Ch. 58.5 - Prob. 2LOCh. 58.5 - Prob. 3LOCh. 58 - If we assume that population density is a good...Ch. 58 - Prob. 2DACh. 58 - Would the extinction rate increase if an area were...Ch. 58 - Prob. 4DACh. 58 - Why do population density and growth rates differ...Ch. 58 - Why might whale populations fail to recover once...Ch. 58 - Why do small populations lose genetic variation?Ch. 58 - Prob. 1UCh. 58 - The economic value of indirect ecosystem services...Ch. 58 - The amphibian decline is best described as a....Ch. 58 - Prob. 4UCh. 58 - When populations are drastically reduced in size,...Ch. 58 - A captive-breeding program followed by release to...Ch. 58 - Historically, island species have tended to become...Ch. 58 - Ninety-nine percent of all the species that ever...Ch. 58 - To effectively address the biodiversity crisis,...Ch. 58 - The introduction of a nonnative predator to an...Ch. 58 - If 99% of the species that ever existed are now...Ch. 58 - Prob. 2SCh. 58 - Prob. 3SCh. 58 - Prob. 4SCh. 58 - Prob. 5S
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- The number of extinctions of birds and mammals has gone up as human populations have increased. True or False ?arrow_forwardHow would you respond to someone who says that because extinction is a natural process, we should not worry about the loss of biodiversity when species become extinct largely because of our activities?arrow_forwardA species of geese migrates to an area with several other geese population. What might occur as a result?arrow_forward
- The Human Population and Its Impact: Population Ecology A population ecologist might study the effect of an introduced predator on the _________ of particular species of mouse in a region. a. habitat b. behavior c. population size d. evolutionarrow_forwardWhy are population sizes not constant in biology?arrow_forwardPopulation _______________ is the number of individuals of a species per unit of habitat area or volume at a given time. (a) dispersion (b) density (c) survivorship (d) age structure (e) demographicsarrow_forward
- Which two extinction risks may be a direct result of the pet trade? a. climate change and exotic species introduction b. habitat loss and overharvesting c. overharvesting and exotic species introduction d. habitat loss and climate changearrow_forwardWhich event occurs when the population in an area has grown beyond the carrying capacity of that area? immigration irruption extinction diebackarrow_forwardList four animals that are threaten in extinctionarrow_forward
- Which statement best describes the recovery of the Mexican wolf population? A. It is experiencing logistic growth because the rate of population growth increases without slowing. B. It is experiencing logistic growth because the rate of population growth increases but slows with time. C. It is experiencing exponential growth because the rate of population growth increases without slowing. D. It is experiencing exponential growth because the rate of population growth increases but slows with time.arrow_forwardWhich of the following is an example of an ecological population? a)All organisms living in a forest b)All mammals in a forest c)A family of deer within a forest d)All members of a single deer species in a forestarrow_forwardHow is a clumped population distribution beneficial for prey animals? a. Being a member of a larger group provides protection for each individual from predators. b. Prey animals rely on each other to acquire food. c. Prey animals live in small family groups to raise young. d. Clumped population distributions ensure that at least one member of the population knows how to identify the seasonal migration route.arrow_forward
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