这章最惨 只有一题答得出来 CH 7 1.What geographic patterns suggested to Charles Darwin that certain kinds of species descended from others? 2.What characteristic make a particular kind of individual successful in the process of natural selection? 3.What conditions make it likely that a samll group of closely related species willl increase to a large number of species by means of rapid specication? 4.How can evolution proceed by a change in the growth and development of a species? 5.In what ways can an evolutionary trend develop during the history of a genus or family? 6.What kinds of environmental change can lead to the extinction of a species? 7.What is mass extinction?(只有这题) An episode of large-scale extinction in which large numbers of species disppear in a few million years or less. 8.How is pseudoextinction related to gradual evolutionary change? 9.Give an example of evolutionary convergence. 10.What general trends has the evolution of horses displayed? 11.Using the Visual Overview on p.182 and what you have learned in this chapter, compare the kinds of evidence that living organisms on the one hand and fossils on the other hand contribute to our understanding of the evolution of life. What kinds of evidence contribute that the other does not? --

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