Biology
12th Edition
ISBN: 9780134813448
Author: Audesirk, Teresa, Gerald, Byers, Bruce E.
Publisher: Pearson,
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Textbook Question
Chapter 31.3, Problem 2CYL
explain why biologists fear that a mass extinction is occurring as a result of human activities?
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Distinguish between biological extinction and mass extinction. Does every species have the right to survive without human interference, regardless of whether they serve a useful purpose to humans? Explain?
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?
HOW MANY MASS EXTINCTION EVENTS HAS EARTH WITNESSED SO FAR?
Chapter 31 Solutions
Biology
Ch. 31.1 - describe the goals of conversation biology?Ch. 31.1 - Prob. 2CYLCh. 31.2 - Prob. 1HYEWCh. 31.2 - Prob. 1CSCCh. 31.2 - Prob. 1CYLCh. 31.2 - Prob. 2CYLCh. 31.3 - Prob. 1TCCh. 31.3 - Prob. 2TCCh. 31.3 - Prob. 1CSCCh. 31.3 - Prob. 3TC
Ch. 31.3 - Prob. 4TCCh. 31.3 - define mass extinction?Ch. 31.3 - explain why biologists fear that a mass extinction...Ch. 31.3 - Prob. 3CYLCh. 31.4 - Prob. 1TCCh. 31.4 - Prob. 1CSCCh. 31.4 - Prob. 1CYLCh. 31.4 - Prob. 2CYLCh. 31.4 - Prob. 3CYLCh. 31.5 - Prob. 1TCCh. 31.5 - describe the principles of sustainable...Ch. 31.5 - Prob. 2CYLCh. 31.5 - Prob. 3CYLCh. 31 - Which of the following is not a major threat to...Ch. 31 - Prob. 2MCCh. 31 - Prob. 3MCCh. 31 - Prob. 4MCCh. 31 - Prob. 5MCCh. 31 - Prob. 1FIBCh. 31 - Prob. 2FIBCh. 31 - Prob. 3FIBCh. 31 - The smallest population of a species that is...Ch. 31 - A popular saying tells us that We do not inherit...Ch. 31 - Prob. 1RQCh. 31 - Prob. 2RQCh. 31 - Prob. 3RQCh. 31 - Why are efforts to protect monarch butterflies a...Ch. 31 - Prob. 1ACCh. 31 - Search for and describe some examples of habitat...
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- What is the “sixth mass extinction event”?arrow_forwardDefine extinctionarrow_forward(A) What is extinction? How extinction is different from expiration? Explain. (B)List the five mass extinction episodes occurred in the history of Earth. Characterize the nature and extent of each extinction episode.arrow_forward
- If extinction is a natural part of life on Earth, why should we care about protectingendangered species Explainarrow_forwardWhich of the following statements about extinction is not correct? (a) extinction is the permanent loss of a species (b) extinction is a natural biological process (c) once a species is extinct, it never reappears (d) human activities have little impact on extinctions (e) thousands of plant and animal species are currently threatened with extinctionarrow_forwardHOW MANY YEARS AGO DID THE MOST RECENT EPOCH BEGIN? HOW MANY MASS EXTINCTION EVENTS HAS EARTH WITNESSED SO FAR?arrow_forward
- Which of the following is believed to be common among all mass extinction events? the type of event that causes the extinction the number of species that went extinct a significant change in the global climate the type of species that went extinctarrow_forwardThroughout Earth’s history, many species, and perhaps even most of the species that ever existed, have become extinct. The causes are numerous: climate change, volcanic activity, the actions of oxygen-producing organisms, changes in carbon dioxide concentration, and even asteroid impacts. Have humans ever caused extinctions?arrow_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_forward
- According to Figure 2 above, how many extinction events contributed to the end-Ordovician mass extinction and when did they occur?arrow_forwardDescribe the evidence for the cause of the Cretaceous–Paleogene (K–Pg) mass extinction.arrow_forwardDistinguish between background extinction and mass extinctions.arrow_forward
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