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PREP07 Test 1
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The bones of Majungatholus atopus, a meat-eating dinosaur that is a distant relative of Tyrannosaurus rex and closely resembles South American predatory dinosaurs, have been discovered in Madagascar.
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PREP07 Test 1
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Africa's black rhino population in the mid-1970's numbered about 20,000, ten times the estimated population of 2,000 in 1997.
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PREP07 Test 1
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Scientists have found signs that moving water changed the chemical makeup of the surface of Mars in recent eras, therefore concluding that its crust is harboring up to three times as much water than was previously thought.
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PREP07 Test 1
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Changes in sea level are not only a result of changes in water temperature, affecting water density, but of melting glaciers as well.
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PREP07 Test 1 OG17 OG18 OG19 OG20 OG2022
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In the major cities of industrialized countries at the end of the nineteenth century, important public places such as theaters, restaurants, shops, and banks had installed electric lighting, but electricity was in less than one percent of homes, where lighting was still provided mainly by candles or gas.
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PREP07 Test 1
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The Nobel Prize in chemistry was awarded to three scientists for their discovery that plastic can be made electrically conductive--an advance that has led to improvements in film, television screens, and windows.
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PREP07 Test 1
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An international team of astronomers working at telescopes in the Canary Islands and Spain has detected at least 18 huge gas spheres estimated to have 5 to 15 times the mass of Jupiter, the solar system's largest planet.
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PREP07 Test 1
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A decade after initiating the nation's most comprehensive and aggressive antismoking program, per capita consumption of cigarettes in California declined from over 125 packs annually per person to about 60, a drop more than twice as great as in the nation as a whole.
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PREP07 Test 1 PREP2012
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A study of food resources in the North Pacific between 1989 and 1996 revealed that creatures of the seabed were suffering from dwindling food supplies, possibly resulting from increasing sea surface temperatures during the same period.
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PREP07 Test 1
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Many environmentalists, and some economists, say that free trade encourages industry to relocate to countries with ineffective or poorly enforced antipollution laws, mostly in the developing world, and that, in order to maintain competitiveness, rich nations have joined this downward slide toward more lax attitudes about pollution.
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PREP07 Test 1
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Women are expected to be the majority of students entering law school this fall, a trend ultimately placing more women in leadership positions in politics and business.
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PREP07 Test 1
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According to a new report by the surgeon general, women with less than a high school education had three times the likelihood that they would begin smoking as women who went to college.
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PREP07 Test 1
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The discovery of glass being expandable and able to be shaped by human breath revolutionized glassworking to such an extent that today "glassblowing" has become the generic term for all glassworking, whether the glass is blown or formed by other techniques.
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PREP07 Test 1
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Though certain breeds of dog are renowned for their sense of smell, there is often a greater difference in scenting ability between two members of a single breed as there is between members of different breeds.
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PREP07 Test 1
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Thunderclouds form when warm, moist air rises into cooler air above, because either the ground is warmer than usually or because the interaction of two air masses, one warm and one cold, forces warm air to rise.
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PREP07 Test 1
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Many population studies have linked a high-salt diet to high rates of hypertension and shown that in societies where they consume little salt, their blood pressure typically does not rise with age.
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PREP07 Test 2
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With no natural predators and expanses of green suburban neighborhoods that allow no hunting, wildlife officials estimate the New Jersey deer population to have grown to exceed 175,000.
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PREP07 Test 2
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Greatly influenced by the Protestant missionary Samuel Kirkland, the Oneida was the only one of the five-nation Iroquois League who sided with the colonists during the American Revolution.
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PREP07 Test 2
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Unlike crested wheatgrass, an alien species from Siberia that forms only shallow roots and produces tall above-ground shoots, native North American grasses develop an extensive root system, allowing for greater enrichment of the soil, but do not grow to be very tall.
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PREP07 Test 2
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If current trends continue, by the year 2010 carbon emissions in the United States will soar to a level more than one-third higher than were those in 1990, according to official projections.
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