|
Which of the following is an assumption on which the argument depends?
|
|
In 1995, after an absence of nearly 70 years, wolves were reintroduced into Yellowstone National Park. During the wolf-free era, heavy browsing of aspen trees by elk populations spelled doom not only fro trees themselves but for a host of other creatures dependent on them, such as beavers, whose population in Yellowstone crashed after wolves were removed. Without beavers to create ponds, wetland ecosystems--aquatic plants, amphibians, birds--were devastated. When wolves returned, grazers and browsers resumed normal patterns of behaviors, preferring safer, open areas over the dense cover and streamsides where carnivores can lurk. Keeping elk wary and on the move, wolves gave aspen and other young trees the opportunity to grow and become reestablished.
|
|
The passage asserts which of the following about beaver populations in Yellowstone?
|
|
The author would most likely agree with which of the following claims about the reintroduction of wolves to Yellowstone?
|
|
The passage supplies information for answering which of the following questions?
|
|
According to the passage, the behavior of male and female Diana monkeys differs in that female Diana monkeys
|
|
The passage suggests which of the following about Braque`s cubism?
|
|
Attempts to identify New Guinea's hunter-gatherers face the well-known difficulty of defining what constitutes a hunter-gatherer group. According to the common definition, hunter-gatherers are those who subsist by hunting wild animals and gathering wild plants. Yet those who subsist by hunting wild animals and gathering wild issue of what constitutes “wild” The very presence on a landscape of humans who are consumers affects food resources, blurring the lines between wild and domesticated and, hence, between hunting and pastoralism and between gathering and cultivation. Moreover, it is unclear how groups should be classified that are hunter-gatherers in their procurement strategies but that make use of pastoralism and cultivation in their consumption patterns—subsisting, for example, by trading wild foods to neighbors in return for domesticated crops.
|
