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The reason geological activity on Mars is so (1)_____while on Earth it remains (2)______ is that Earth`s diameter is about twice the size of Mars`. Because Mars is smaller than Earth, it cooled faster, and therefore it lost the internal heat that drives tectonic activity.
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The archaeologist argues that botanists have often (i)_______ the role of human agency in the dispersal of floral species, pointing out that a range of plants that botanists formerly thought to be (ii)______were actually introduced to Australia by people in the recent and distant past.
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Among geophysicists there was considerably less (i)_________ the proposed environment measure than the (ii)_______ media accounts of the conference would suggest: the debate was often animated but never uncivil.
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Genetic researchers have recently suggested that our political learnings may be determined by our DNA, a view that tends to undermine our reflective self-flattery. We (i)___________ the idea that personal politics are entirely (ii)_______. The genetic explanation for ideology (iii)__________ our belief that we are persuaded only by rational arguments.
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For literary critics and book reviewers, the notion of critical authority has become ______in an age of quick, teeming Internet response, where all the old critical standards and parameters are in the process of being reinvented.
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Rosen argues that in the early years of the United States, individual states played important roles in the governance of American Indians, thereby ________ the common assumption that Indian policy was exclusively the federal government`s domain.
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Katherine`s disobedient behavior earned her a ______ from her parent.
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Building the first United States transcontinental phone line required fundamental innovations: for example, engineers created an amplifier for the electric signals to prevent them from ______ after a few miles.
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While the hyperbole throughout the book is trying and does little to ______matters, it is not as worrying as the inaccuracies that accompany the book`s outdated exposition.
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While Fernandez-Armesto has amply documented the commercial, migratory, scientific, or religious motives of explorers throughout history, it is often harder to ________ the motives of modern explorer.
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Far from being (i)_______ the corporate world because of cutbacks, serious scientific researchers are playing a growing role in innovation in certain firms. The explanation for this apparent paradox is that innovative companies are not looking for full-time scientists; they want moonlighting academics, professors (ii)_______ to work temporary projects.
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The enlightenment philosophers of the eighteenth century acknowledged that unrestricted freedom to publish could (i)_______ motivated by envy or hatred, but they hoped that any such (ii)_________ enabled by expanded liberties would suffer from being publicly exposed.
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The man was an avowed (i)_____: he made no secret of his disdain for (ii)______ endeavor.
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Greenhouse gases emitted into atmosphere are virtually permanent, and because they (i)_________ in the atmosphere, their effects is (ii)_______. These facts necessitate that policies related to greenhouse gases differ from policies related to various pollutants whose effects are (iii)______ and often temporary.
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If aging is merely an avoidable by-product of life rather than a necessary progression, it is possible that we might eventually forestall ________.
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The idea that Jim was ______, that he loved fighting for the sake of fighting, was a mistake, in reality he was a kind and gentle person.
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Experiments have shown that it is shockingly easy to elicit a sense of ________ among a group of strangers:just tell them they`ll be working together as a team.
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Ursula Le Guin claims that looking at schoolbooks from around 1900 can be________, given that the level of literacy and general cultural knowledge expected of a mere ten-year-old was, she notes, "rather awesome".
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If the African farmers face a soil fertility problem, providing funding for fertilizer seems________; closer examination of data raises some troubling questions, however.
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For the early years of the twentieth century, ecology remained essentially a ______ science: ecologists went into the field, counted plants and animals, made lists, and that was pretty much that.
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