GRE Exam Dumps : GRE General Test

Origin, distribution, and habitat are included in the book for some but not all of the plants: offering this information for each species would have given readers a clearer appreciation of the differences between _________and introduced species.

Even the most complex models used in fishery management are cartoons of reality. They reduce hundreds of links in food webs to a handful and inadequately represent processes operating over space. Many of their assumptions are as flawed today as those of the simplest models of the past. Fish stocks, for one. are still assumed to be populations of a species that are isolated from one another. Yet many populations mix at their edges and some even migrate through areas occupied by other populations. Furthermore, the more complex models suffer from a "crisis of complexity"—more is really less. Adding layers of detail, each carrying its own set of assumptions, produces instability. The model's behavior becomes erratic, and conclusions drawn from it can be downright misleading.

In the context of the passage, the highlighted portion serves to

Sensationalism—the purveyance of emotionally charged content. focused mainly on violent crime, to a broad public—has often been decried, but the full history of the phenomenon has yet to be written. Scholars have tended to dismiss sensationalism as unworthy of serious study, based on two pervasive though somewhat incompatible assumptions: first, that sensationalism is essentially a commercial product, built on the exploitation of modern mass media, and second, that it appeals almost entirely to a simple, basic emotion and thus has tittle history apart from the changing technological means of spreading it. An exploration of sensationalism's early history, however, challenges both assumptions and suggests that they have tended to obscure the complexity and historicity of the genre.

According to the passage, scholars have not given sensationalism serious consideration because they believe sensationalism