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Substantial atmosphere around planetary bodies acts as (i)_____ incoming objects. Smaller objects, particularly those that are lower in density and more fragile, (ii)_____ in the upper reaches of the atmosphere, whereas more intact, larger bodies may survive to impact the surface. Thus, relative to large craters, small craters are much less (iii)_____ on bodies with dense atmosphere, such as Earth, Venus, and Titan, than they are on Mercury and Moon.
Many scholars studying leadership _____ cult of the celebrity that has been fostered both by the media and by politicians' public relations staffs, arguing that it trivialized politics.
Experimentation in the arts often generates befuddlement, and even _____ of innovative art generally have voiced perplexity regarding this new, experimental artwork.
The sailors realized too late that winds had shifted the ice in such a way as to obstruct the ship's path; this process had been so _____ that it was completed by the time they discovered the effect.
What makes the precisely oriented flight of a honeybee swarm to its new home so _____ is that only a small percentage of its members know the swarm travel route and final destination.
Since the field of quantum mechanics is often considered to be (i)_____, it was surprising to find it attracts so much (ii)_____ interest.
To many newspapers readers now, this book published in 1953 is (i)_____. It is filled with references to some people whose ideas seemed (ii)_____ at that time, but are rarely viewed as (iii)_____ persons now.
Some minor misgivings about the book notwithstanding, the editor's claim that the work will be recognized as “the authoritative history of sports for this era” is thoroughly _____.
In the 1630s, directors of the Dutch West India Company received reports of minor problems from their agents with _____, as the company was wealthy enough not to be overly concerned about small frustrations.
Even though the idea that medical research should be rigorously objective is (i)_____ one in the medical community, the editors of medical journals often display a disquieting (ii)_____ when it comes to articles submitted by researchers who accept money from the makers of the products they evaluate in their research; editors rarely ask whether that research is truly disinterested.
Making the shift to the 90-nanometer manufacturing process has been (i)_____ for semiconductor companies. This process effectively doubles the manufacturing capacity of the industry, but it (ii)_____ enormous technical challenges because some components of the new semiconductor chips are no more than five to seven molecule thick.
An invasive creeping weed native to the Mediterranean region, Cirsium arvense has been present in Yellowstone National Park at least since the nineteen century. Because of its extensive root system, the plant defies attempts to (i)_____ it by normal methods, and consequently, park officials have (ii)_____ efforts to do so. Warming temperature have also (iii)_____ of the thistle`s fortune.
Marie Tharp`s mapping of the ocean floor, which was based on a mass of previously unanalyzed measurements of ocean depth, did not depend on (i)_____ but on (ii)_____: she (iii)_____ the sea floor`s contours by marrying the voluminous but incomplete data with her knowledge of geology.
The proposition that foraging Native Americans studied the skies is _____: anthropological evidence demonstrates, for example, that the Chumash Indians counted the lunar cycles and established the times of the solstices.
In the nineteenth century, the circus, for all its glitz and even its glamour, was entertainment with an old soul, _____ the fast-forward pace of change in modern life.
Sokari Douglas Camp was _____ in the early 1990s by many of London's commercially driven art dealers and galleries, some of whom apparently found her themes difficult to market.
It is troubling that blogs, which may be among the least reliable sources of information in human history, occupy such _____positions in Internet search engine results.
The anthropologist ______ the claim that the Neanderthal remains must represent an immediate family because they belong to the same mitochondrial lineage, noting that some chimpanzees with identical mitochondrial are not closely related.
While the current coffee craze was sparked by the emergence of flavorful, high-quality gourmet varieties, a slew of studies suggesting that concerns about coffee`s health effects may be _____ have nurtured the trend.
In a sharp blow to his reputation as (i)_____ leader, the evidence that the mayor has recently been involved in malfeasance seems to be (ii)_____.

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