Conserving Biodiversity
Chapter 16, Problem 4
Current rates of species extinction appear to be approximately historical rates of extinction. a. equal to; b. 10 times lower than; c. 10 times higher than; d. 50 to 100 times higher than; e. 1000 to 10,000 times higher than
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Related Practice
Textbook Question
Add labels to the figure that follows, which illustrates the interacting factors in a declining population that contribute to the extinction vortex.
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Textbook Question
Compare and contrast the species interactions of mutualism, predation, and competition.
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Textbook Question
A mass extinction .
a. is global in scale;
b. affects many different groups of organisms;
c. is caused only by human activity;
d. A and B are correct;
e. A, B, and C are correct
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Textbook Question
According to the generalized species-area curve, when habitat is reduced to 50% of its original size, approximately of the species once present there will be lost.
a. 10%;
b. 25%;
c. 50%;
d. 90%;
e. it is impossible to estimate the percentage
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Textbook Question
Which cause of extinction results from humans' direct use of a species?
a. overexploitation;
b. habitat fragmentation;
c. pollution;
d. introduction of competitors or predators;
e. global warming
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Textbook Question
The web of life refers to the . a. evolutionary relationships among living organisms; b. connections between species in an ecosystem; c. complicated nature of genetic variability; d. flow of information from parent to child; e. predatory effect of humans on the rest of the natural world
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