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Compared to Earth over most of its 4 to 6-billion-year history, the world we live in today is quite (i)_____. Of course, it is human nature to regard the world that we are used to as (ii)_____. The oceans, prairies, and mountain chains—even the air we breathe—seem the norm and therefore (iii)_____.
My grandma has a strong belief in all things _____: she insists, for example, that the house in which she lived as a child was haunted.
Now that photographic prints have become a popular field for collecting, auctions are becoming more (i)_____. It is not just the entry of new collectors into the field that is causing this intensification. Established collectors' interests are also becoming more (ii)_____. Those who once concentrated on the work of either the nineteenth-century pioneers or the twentieth-century modernists are now keen to have (iii)_____ collections.
The beauty of the scientific approach is that even when individual researchers do _____ bias or partiality, others can correct them using a framework of evidence on which everyone broadly agrees.
The reconstruct known work is beautiful and also probably _____: it is the only Hebrew verse written by a woman.
In a book that inclines to _____, an epilogue arguing that ballet is dead arrives simply as one more overstatement.
The skin of the poison dart frog contains deadly poisons called batrachotoxins. But the (i)_____ of the toxins has remained an enigma, as the frog does not (ii)_____ them. Now an analysis suggests that the melyrid beetle is the source. Collected beetle specimens all contained batrachotoxins, suggesting that these beetles are (iii)_____ by the frogs.
Although trains may use energy more (i)_____ than do automobiles, the latter move only when they contain at least one occupant, whereas railway carriages spend a considerable amount of time running up and down the tracks (ii)_____, or nearly so.
Most capuchin monkey conflict involves such a (i)_____ repertoire of gestural and vocal signals that it is difficult for researchers to tease apart the meanings of the individual signals. This (ii)_____ is (iii)_____ by the fact that many signals seem to shift in meaning according to the context in which they are produced and the developmental stage of the individuals producing them.
Within the culture as a whole, the natural sciences have been so successful that the word “scientific” is often used in (i)_____ manner: it is often assumed that to call something “scientific” is to imply that its reliability has been (ii)_____ by methods whose results cannot reasonably be (iii)_____.
During the Renaissance, the use of optical lenses, which were capable of projecting images onto blank canvases, greatly aided artists by allowing them to accurately observe and depict the external world; in other words, these lenses were instrumental in conveying _____.
The professor's habitual air of _____ was misleading front, concealing amazing reserves of patience and a deep commitment to his students' learning.
Though we live in an era of stunning scientific achievement, many otherwise educated people remain indifferent to or contemptuous of such achievement, even going so far as to _____ their ignorance of basic physics.
Slight but _____ variation in the timing of the star's pulses led astronomers to deduce that it was being pulled backwards and forwards by three planets orbiting around it.

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