BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Textbook Question
Chapter 58, Problem 2A
Ninety-nine percent of all the species that ever existed have gone extinct,
a. serving as evidence that current extinction rates are not higher than normal.
b. but most of these losses have occurred in the last 400 years.
c. which argues that the world just had too many species.
d. None of the choices is correct.
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Students have asked these similar questions
The main arguments against the overkill hypothesis of megafauna extinction are
a.
Lots of species other than megafauna went extinct
b.
Rapid climate change destroyed the habitat that the megafauna depended on
c.
Many megafauna in North America went extinct before humans arrived
d.
All of the above
Species that are more vulnerable to certain risk factors are more likely than others to become extinct. For example, species with a unique lineage, such as the giant panda, are likely to be at severe risk of extinction.a. Should our limited resources for species protection be focused on species that are at the highest risk of extinction?b. Do you support the idea that high-risk species may be less successful products of evolution and should not receive extraordinary protection?
Arguments in favor of the overkill hypothesis of megafauna extinctions are
a.
Basically everywhere humans colonized, big animals went extinct
b.
Climate change similar to the end of the Pleistocene happened many times before, and there was no megafauna extinction
c.
In nearly all the Clovis kill sites in North America, mammoth or other megafauna are present
d.
All of the above
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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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- If in the near future the scientific community decides with absolute certainty that there is only a 50% chance that climate change will occur. Why might we want to still move forward with reducing emissions to prevent climate change without higher certainty? a. because it is the right thing to do b. because the potential impacts of climate change pose a serious threat to mankind c. because protecting nature is more important than money d. because it is politically advantageous, although not fully necessary at that level of certaintyarrow_forwardAn extinction vortex describes a) changes in a population’s gene pool that lead to a loss in fitness across time. b) a species ability to adapt to changes in their environment. c) the continuous series of extinctions caused by competition between species. d) a population that has a reduction in fitness because it cannot escape a Hardy-Weinberg Equilibrium.arrow_forwardSuppose that a type of tree tends to speciate over 10 million years and a species of fly tends to speciate over 1 million years. In the event of a mass extinction, which of the following predictions would LIKELY be true? A. It is impossible to determine how many niches or species the trees and flies would lead to over time. B. The trees would fill more niches and create more species than the flies. C. The flies would fill more niches and create more species than the trees. D. They would both lead to the same number of species.arrow_forward
- If extinction is a natural part of life on Earth, why should we care about protectingendangered species Explainarrow_forwardThe graph below shows the population of three different families of marine organisms along five different mass extinction events. Each colour on the graph represents a family of organisms, and the Y axis shows how many species belong to that family. a. What stage of population growth is displayed at point ‘0’ on the graph above? b. The Extinction Event that occurred at point 3 was particularly significant. Using the graph, explain how this event impacted each marine family. c. The extinction events mapped above had significant impact on marine life. What type of event could have a similar impact on the human population?arrow_forwardWe (humans) do not have any ethical burden to worry about other species because extinction is a natural process. True or False?arrow_forward
- Are humans the culprits of the sixth extinction? Cite two examples to justify your stand.arrow_forwardIdentify a species that your group thinks is ok to drive to extinction and justify the reasons for this decision. Can you anticipate any consequences of losing this species from the Earth?arrow_forwardWhy are species that live at the tops of mountains at increased risk of extinction due to climate change? a. The colder temperatures at the tops of mountains gradually increase, and the species at the tops of the mountains are displaced by species at lower elevations moving up. b. The species at the tops of the mountains are adapted to moving up and down the mountains and species at lower elevations are displacing them as they move down the mountains. c. The species at the tops of the mountains are adapted to lower oxygen and climate change increases oxygen content in the air. d. Species at the tops of mountains do not have the genetic diversity for adaptation that lower-elevational species do. Therefore species at the tops of the mountains are more likely to go extinct.arrow_forward
- Which of the following strategies would most rapidly increasethe genetic diversity of a population in an extinction vortex?(A) Establish a reserve that protects the population’s habitat.(B) Introduce new individuals transported from other populations of the same species.(C) Sterilize the least fit individuals in the population.(D) Control populations of the endangered population’spredators and competitors.arrow_forwardWhy might the increasing human population result inan increase in the extinction rate of other species?arrow_forwardIn not more than 4 paragraphs. What is the relationship of each predation in the extinction of some animals? Discuss.arrow_forward
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