BIOLOGY (LL)
5th Edition
ISBN: 9781264115495
Author: BROOKER
Publisher: MCG
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Chapter 58, Problem 2TY
Summary Introduction
Introduction: An observation was made that 580 species of invertebrates that were bottom-dwelling were found in the lake Baikal in Siberia, which is a very old, temperate and unglaciated lake. An observation was also made that only 4 species of invertebrates that were bottom-dwelling were found in the lake Great Slave, which is a much larger, was glaciated earlier and lies at the same latitude in North Canada.
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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
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
A recent United Nations analysis report gathered data on declines in biodiversity across the world. Using the graphs provided, which statement shows an area of concern and is an alternative to the general hypothesis "Humans are responsible for a significant increase in the extinction rate among species in the world today as a result of damage caused to the environment"?
A. Fertilizer use in developing countries should be encouraged to decrease the extinction rate
B. Decreasing air pollution in the least developed countries would decrease species survival rate
C. Protection of key biodiversity areas should be a priority for developed countries to lower the extinction rate
D. Assisting developing countries with more sustainable methods of extraction of living biomass would increase species survival rates
Chapter 58 Solutions
BIOLOGY (LL)
Ch. 58.1 - Prob. 1CCCh. 58.3 - Prob. 1CCCh. 58.3 - Inhibition implies that competition exists between...Ch. 58.4 - Prob. 1CSCh. 58.4 - Prob. 1CCCh. 58.4 - Prob. 1EQCh. 58.4 - Prob. 2EQCh. 58.4 - CoreSKILL What did the researchers conclude about...Ch. 58.5 - Core Skill: Connections In the two food chains...Ch. 58.5 - Prob. 1CC
Ch. 58.5 - Prob. 2CSCh. 58 - Prob. 1TYCh. 58 - Prob. 2TYCh. 58 - Which evidence suggests that more diverse...Ch. 58 - The process of primary succession occurs a. around...Ch. 58 - Prob. 5TYCh. 58 - Prob. 6TYCh. 58 - Prob. 7TYCh. 58 - Prob. 8TYCh. 58 - Prob. 9TYCh. 58 - Prob. 10TYCh. 58 - Prob. 1CQCh. 58 - Prob. 2CQCh. 58 - Core Concept: Systems In the nutrient-poor...Ch. 58 - List some possible ecological disturbances, their...Ch. 58 - Prob. 2COQ
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