Gmat_OG13.pdfVIP

1. Snowmaking machines work by spraying a mist that 6.Parlands alligator population has been declining in freezes immediately on contact with cold air. Because recent years, primarily because of hunting. Alligators the sudden freezing kills bacteria, QuickFreeze is prey heavily on a species of freshwater fish that is planning to market a wastewater purification system highly valued as food by Parlanders, who had hoped that works on the same principle. The process works that the decline in the alligator population would lead only when temperatures are cold, however, so to an increase in the numbers of these fish available municipalities using it will still need to maintain a for human consumption. Yetthe population of this fish conventional system. species has also declined, even though the annual Which of the following, if true, provides the strongest number caught for human consumption has not grounds for a prediction that municipalities will buy increased. QuickFreezes purification system despite the need to Which of the following, if true, most helps to explain maintain a conventional purification system as well? the decline in the population of the fish species? (A) Bacteria are not the only impurities that must be (A) The decline in the alligator population has meant removed from wastewater. that fishers can work in some parts of lakes and (B) Many municipalities have old wastewater rivers that were formerly too dangerous. purification systems that need to be replaced. (B) Over the last few years, Parlands commercial (0 Conventional wastewater purification systems fishing enterprises have increased the number have not been fully successful in