Q28 regulations will not allow a pesticide that is

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Q28: Regulations will not allow a pesticide that is toxic to humans to be used inside houses unless the pesticide will dissipate completely from the air within eight hours after its application. One test that pesticide manufacturers standardly use to determine how quickly anti-termite pesticides dissipate involves spraying the pesticides on the walls of room-sized plywood boxes and then timing its dissipation. Which of the following would it be most useful to know in order to evaluate whether a dissipation time of just under eight hours on the manufacturers’ test indicates that an anti- termite pesticide that is toxic to humans obeys regulations for use in houses? 25
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A. Whether anti-termite pesticides dissipate more slowly in furnished rooms than in plywood boxes B. Whether people who apply anti-termite pesticide standardly wear protective equipment that prevents them from being exposed to the pesticide C. Whether people whose house is being treated with anti-termite pesticide generally know that they should remain out of their house during the hours immediately after the pesticide’s application D. Whether there are anti-termite pesticides that are toxic to humans that, when subjected to the manufacturers’ test, dissipate completely from the air in the boxes in well under eight hours E. Whether anti-termite pesticides that are not toxic to humans tend to take longer to dissipate than those that are toxic Answer: ------------------------------------------------------------------------------------------------------------ Q29: Floating in the waters of the equatorial Pacific, an array of buoys collects and transmits data on long-term interactions between the ocean and the atmosphere, interactions that affect global climate. ------------------------------------------------------------------------------------------------------------ Q30: Under high pressure and intense heat, graphite, the most stable form of pure carbon, changes into the substance commonly referred to as diamond and remaining this way whether or not the heat and pressure are removed. ------------------------------------------------------------------------------------------------------------ Q31: Frobisher, a sixteenth-century English explorer, had soil samples from Canada’s Kodlunarn Island examined for gold content. Because high gold content was reported, Elizabeth I funded two mining expeditions. Neither expedition found any gold there. Modern analysis of the island’s soil indicates a very low gold content. Thus the methods used to determine the gold content of Frobisher’s samples must have been inaccurate. Which of the following is an assumption on which the argument depends? 26
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A. The gold content of the soil on Kodlunarn Island is much lower today than it was in the sixteenth century.
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