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The author of the passage would be most likely to disagree with the "agricultural historians" over whether
The author's reference to the fact that "even low elemental concentrations and minute features in diamonds can now be analyzed" serves primarily to
It can be inferred from the passage that natural diamonds are of geological interest because they provide information about

Quantity A

The area of triangular region A

Quantity B

The area of triangular region B




List L consists of at least 20 numbers, and the average (arithmetic mean) of the numbers in L is 25. If an additional number x is included in the list, the average of the numbers in L will increase by 2.

Quantity A

x

Quantity B

60




Quantity A

$$(0.001)^{-1}+(0.999)^{-1}$$

Quantity B

$$(0.002)^{-1}+(0.998)^{-1}$$




For all positive integers x and y, the operation $$\odot$$ is defined by x$$\odot$$y=$$x^{-y}$$.

Quantity A

$$(2\odot2)^{3}$$

Quantity B

$$(2\odot3)^{2}$$




Quantity A

380(y+6)

Quantity B

380(у+4) + 380(у+2)




If $$x$$ is a positive integer and $$x \gt 5$$, which of the following could be the units digit of $$19^{x}$$?

Indicate all such digits.


In the figure shown, the area of the circular region is approximately 50 percent of the area of the shaded region. The area of the rectangular region is approximately what percent of the area of the circular region?
Which of the following inequalities is consistent with the statement that the time it took train K to travel $$r$$ miles at a constant rate of $$s$$ miles per hour is less than the time it took train M to travel $$y$$ miles at a constant rate of $$z$$ miles per hour?
The total annual per capita consumption of ice cream and cheese combined in 1950 was approximately what percent of that in 1990 ?
For 1970, which of the following is closest to the ratio of the annual per capita consumption of fresh vegetables to that of ice cream?
Many leading photographers have begun to produce work specifically for galleries and museums, and therefore, not surprisingly, they now regard the long-standing question of whether photography really (i)________ art to be (ii)________.
Every few years, as a reviewer, one encounters a novel whose (i)________ are so many in number, and so (ii)_______ that to correct them fully would produce a text that exceeded the novel itself in length. Faced with such a book. one wishes only to let it slip quietly to the seabed of culture, there to join thousands of other (iii)________ books in their slow disintegration
Recently, controversial findings were released that suggest that the amount of carbon dioxide absorbed by United States forests might be greater than the amount emitted by the nation's fossil-fuel combustion. This conclusion has two astonishing implications. First, the United States may not be directly contributing to rising atmospheric levels of carbon dioxide. Second, the atmosphere seems to be benefiting from young forests, which are particularly efficient at absorbing carbon dioxide. But these young forests exist only because old-growth forests were clear-cut in earlier centuries. The possibility that the United States absorbs more carbon dioxide than it produces thus does not reflect efforts to protect the environment; rather, it reflects a history of deforestation and development.
Which of the following, if true, would most weaken the author's argument that the ability of the United States to absorb more carbon dioxide than it produces is not a result of efforts to protect the environment?
It can be inferred from the passage that the author assumes which of the following about United States carbon dioxide emissions?
Looking back on a project that they had approached with both great________ and considerable aspirations, they were amused to recognize that neither the fears nor the hopes had been at all realistic.
Recent discoveries suggest that mathematical techniques developed by ancient Babylonian astronomers________ those of medieval European scholars: Babylonian trapezoid procedures can be viewed as a concrete example of graphical methods devised by fourteenth-century philosopher Nicole Oresme.

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