Campbell Essential Biology with Physiology (5th Edition)
5th Edition
ISBN: 9780321967671
Author: Eric J. Simon, Jean L. Dickey, Jane B. Reece, Kelly A. Hogan
Publisher: PEARSON
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Chapter 14, Problem 13BS
Summary Introduction
To explain: How the impact of human activities might make the sixth mass extinction different from previous mass extinctions as many biologists think current rate of species extinction indicates that a sixth mass extinction is underway.
Introduction: Mass extinction is an event that involved the extinction of very large populations of biodiversity on earth. It occurs when the rate of extinction is more than the rate of
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Is extinction normal? Explain. What is NOT normal about it now? Why is the loss of biodiversity so crucial to Earth and us?
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Campbell Essential Biology with Physiology (5th Edition)
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- Why do you suppose there are so many endemic species—that is, species found nowhere else—on islands? Why have the overwhelming majority of recent extinctions occurred on islands?arrow_forwardWhat are the five mass extinctions of the past and the current theory of the sixth mass extinction? For each extinctions, what caused the extinction and how was ecosystem stability impacted? Was there any speciation that occurred afterward?arrow_forwardWhat kinds of characteristics make species especially likely to go extinct?arrow_forward
- If a sixth extinction event is occurring, how is it similar or different from the previous five mass extinctions? What sort of evidence do you think scientists look for to determine whether we are living through a mass extinction?arrow_forwardWhat do paleontological studies show about the relationship be-tween the geographic range of a species and its probability of un-dergoing speciation or extinction? How does this relationship present a paradox for biodiversity?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
- Identify 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 do some species survive while others go extinct? Explainarrow_forwardWhat pattern has been observed between humans moving to a new area and extinction?arrow_forward
- What conditions make it likely that a small group of closely related species will increase to a large number of species by means of rapid speciation?arrow_forwardClimate warming could lead to all-female populations of bearded dragons, resulting in extinction of the species. What are some other potential effects of climate warming on natural populations of organisms?arrow_forwardGiven your knowledge of how species evolve, why is it not likely that speciation will occur in the majority of species on the planet as a result of climate change?arrow_forward
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