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In general, observational studies tend to (i)____________ the effect of diet on overall health because a healthy diet is often (ii)____________ a healthy lifestyle. People who watch what they eat probably exercise more, avoid smoking, and follow other behaviors (iii)____________ good health. Any of those behaviors might also help explain why these people have lower disease rates.
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Pine stumps have been found in discrete layers in peat deposits throughout western Europe and thus represent brief but distinct episodes of bog colonization by pine. Their occurrence implies conditions on the bog surface suitable for colonization, followed by inhospitable conditions for trees that nevertheless facilitated preservation of stumps. Thus, the (i)____________ of pine stumps can (ii)____________ climate change, by (iii)____________ the inference that bog surfaces had dried sufficiently to allow colonization and then became too wet to support the trees.
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Orbiting Jupiter just beyond Europa, the giant moon Ganymede--bigger than the planet Mercury--appears rather ____________ on the outside, but it may be warm and active within.
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Although the use of cameras to study animal behavior was certainly not ____________, cameras were nevertheless not used to study individual frogs in their natural habitat until 2009.
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In nineteenth century Puerto Rico, the consumption of salted cod spread among the entire population; on the tables of humbler families it became ____________ food, adding flavor to other products and supplying much-needed protein.
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Any time the double helix of DNA is cut, the cell initiates what is usually ____________ repair to the break: during the mending process, a few letters of DNA usually get deleted.
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Translators are becoming less rather than more (i)____________. Few readers are (ii)____________ the person who translates their favorite foreign novelist, even though that person will have a huge influence on the tone and feel of every page.
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The comments are (i)____________ to be sure, meant to suggest new lines of research rather than to deal with the subject in (ii)____________ manner.
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Computational psychologists, since they take the operation of a computer as a model, ____________ concepts from computer science to explain what the mind is and how it works.
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At first glance, the new CEO stands in stark contrast to his predecessor: while Simpkins came across as a scolding headmaster, his successor appears ____________.
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His responses were succinct and were given with such ____________ that at one point she felt as if he had been supplied the questions beforehand in order to prepare for the meeting.
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Klein has dedicated her career to rooting out and exposing scientific fraud. She is indisputably a partisan, editorializing sharply against poor oversight and vague retraction notices, yet her focus on evidence over accusations (i)____________ earlier watchdogs who sometimes seemed ((ii)______________ personal animus.
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Direct imaging cannot yet be done for a terrestrial exoplanet because of the daunting optics challenges. For one thing, the glow of a terrestrial exoplanet could be much more (i)____________ than that of its host star. If this is the case, scientists would have to (ii)____________ much of the host star's light to (iii)____________ the exoplanet.
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Why is the idea that self-deception contributes to happiness so (i)____________? The (ii)____________ of self-deception leads people to assume that it must have some function, that it is, in fact, adaptive in the sense that it helps us survive and thrive. But one could (iii)____________ by arguing that the capacity for self-deception is actually only a by-product of other features of the human mind that are beneficial for reasons other than their being implicated in producing self-deception.
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There is a clear trend away from automobile ownership and solo driving among young people. One view holds that these young people will (i)____________ as they age, but Willson argues that the trend is (ii)____________ one. As a result, car-free lifestyles will become more (iii)____________.
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Critics have interpreted African American painter Charles White's (i)____________ abstract art as evidence of his indifference to aesthetic innovation; yet White's (ii)____________ was not directed at abstract artists' (iii)____________ but rather at what White saw as their disengagement from pressing social realities.
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Myth and orality are ___________ in Africa: the former is ubiquitous in the African oral literary tradition, while the latter is almost always based on the former.
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Ziegler has long been seen as a model of ____________, but Gunther, in her biography of Ziegler, comes to a very different conclusion: that Ziegler caused far more harm than good to the people she purported to serve.
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Scientists have assumed that certain seabirds eat plastic debris because it looks to them like their natural prey, but a new study suggests that what ____________ them is an odor the birds associate with food.
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Julius Caesar made a display of ____________cruel retribution against fellow Romans, but only if these Romans gave up their opposition to him.
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