GMAT IR Essays

GMAT IR Essays GMAT IR Essay GMAT IR Essay From each drop-down menu, select the option that creates the most accurate statement based on the information provided. 31 A . The percent increase in the total number of Internet users from 2002 to 2007 was 31 B. The number of Internet users per 100 people increased by approximately from 2000 to 2010. 32, On Days 1 through 4 of a recent week, Product X was out of stock at Retailer R. Day 1 shoppers are those shoppers who came to Retailer R on Day 1 of that week seeking Product X. For each of the first 3 days of that week, the graph shows the subsequent behavior of all Day 1 shoppers who came to Retailer R seeking Product X on that day. Shoppers at Retailer R who purchased a different item in lieu of Product X paid an average of 30% more for the item. From each drop-down menu, select the option that creates the most accurate statement based on information provided. AAA. % of Day 1 shoppers returned to the store on Day 3. BIB. Shoppers at Retailer R who purchased substitute items from other manufacturers on Day of the total all Day 1 shoppers would have paid had each of them been able to purchase Product X on Day 24 33, The graph depicts the per-person dietary intake of foods in 4 categories for the people of Nation X for the years 1909 through 2000. : A decline in consumption in all 4 categories strongly suggests an overall food shortage rather than a simple change in dietary pattern. From each drop-down menu, select the option that creates the most accurate statement about food consumption in Nation X based on the information provided. AAA. The graph suggests that Nation X most likely experienced a food shortage shortly before the year BIB. For the year that the total dietary intake of carbohydrates was lowest, the per- errors intake of carbohydrates was approximately times the per-person intake of dietary fiber. 5 The graph shows the estimated year-end population for the 3 most populous territories in Nation X in 5 selected years. The estimated year-end population of Nation X was in 1990 and 2010. AAA . The increase in the estimated year-end population of Territory C from 1990 to for approximately of Nation X over the same period. % of the increase in the estimated year-end population BIB. In 2010, the estimated total year-end p opulation of the 3 territories was of the estimated year-end population of Nation X. 5. Rock varnish is typically rich in iron and manganese, with the presence of manganese due to bacteria on the surface of the rock. Because the bacteria would not survive on the surface of rocks in the colder, continuously frozen, reaches of Antarctica, scientists were not surprised to discover that rock varnish in the Thiele Mountains area of Antarctica consists only of limonite, a form of oxidized iron. This had penetrated from the surfaces of the rocks into the cracks. However, although moisture is essential to the movement of limonite, snow has not melted in 6 the Thiele Mountains in recent times. Indicate which statement in the table the given information most strongly suggests is true, and the statement that the given information most strongly suggests is false. Make only two selections, one in each column. AAA BIB True False o Moisture is required for the presence of significant amounts of manganese in the environment. Moisture is not required for the presence of significant amounts of manganese in the c When temperatures in a continuously frozen location increase to above freezing, racks in rocks there begin to take in rock varnish containing significant amounts of manganese. Rock varnish that is especially rich in iron is mostly found in extreme cold. Manganese is unable to penetrate into cracks in significant amounts. Temperatures on rocks in the Thiele Mountains were above freezing at some point in the past. 28 39, 29 41, 42, 31 43 . Professor A: The aid industry should begin to limit its efforts to spending on primary schools in the poorest areas, providing medicines and other basic supplies for health care such as mosquito nets, and to a few key agricultural initiatives. Professor B: Much education work has been ineffective. A village or town with poor schooling may be better off getting a road than a teacher. Once local farmers can transport produce to market they will be willing to pay for schools-and to make sure the schools succeed. Suppose that the professors statements express their genuine opinions. Select statements (1) and (2) as follows: Professor A would likely disagree with (1) and Professor B would take (2) to present logical support for (1). Select only two statements, one per column. 43

Coral Reefs Essays

Coral Reefs Essays Coral Reefs Essay Coral Reefs Essay Coral Reefs Review of the Literature What are Coral Reefs? Coral reefs are said to be the foundation for many marine species, and are a crucial support for human life. The coral reef ecosystem is an a diverse collection of species that interact with each other and the physical environment. Coral reefs are the homes of many species including crabs, shrimp, oysters, and clams, foods eaten by humans on a daily basis. Coral reefs are among the most diverse and biologically complex ecosystems on earth, supporting 33% of marine fish species. Research has shown that there exist a host of dangers for these precious species that are living in our very oceans and alongside our seashores, and these are some pertinent questions that need to be addressed in order to establish whether coral reefs are needed for our future existence and to global warming: 1. The habitat of the coral reef? 2. Environmental problems presently facing the habitat 3. What is coral bleaching? 4. Coral bleaching and our global environment? Corals in Crisis The habitat of the Coral Reef According to Dustan, â€Å"Since the late 1970s, reefs across the world have been dying at an unprecedented rate, and it only seems to be getting worse. Dustan points out that in the Florida Keys alone extensive reef monitoring studies conducted by the EPA and other agencies have shown that the reefs lost more than 38% of their living coral cover from 1996 to 1999. Carysfort Reef lost over 90% of its coral cover from 1974 to 1999. The Global Coral Reef Monitoring Network, the single largest coral reef monitoring effort in the world, reported in October 2000 at the 9th International Coral Reef Symposium in Bali, Indonesia, that of all the reefs they monitor worldwide, 27 percent have been lost and another 32 percent could be lost in the next 20-30 years (Pockley 2000). Coral Reefs and our Environment The coral bleaching response to climate change first appeared on the policy stage in the summer of 1987, coincident with a major internatio nal episode of bleaching, increasing concern about global warming, and one of the warmest years on record in Washington, DC. The Senate held hearings on coral bleaching and testimony reported preliminary scientific evidence that linked bleaching with unusually warm seasonal seawater temperatures. Corals bleach when stresses, including high temperatures, stimulate the coral animal to expel its intra-cellular single-celled plant symbionts, which are characteristic of all reef-building corals and critical to coral health. As the color of corals is determined in large part by the plant cells, the corals appear to bleach. Bleaching does not immediately kill corals and they are capable of recovery if the stress is removed, but if it is prolonged corals may die. Coral Bleaching and Our Global Environment Human activities influence coral reefs in a variety of ways, but the general categories of disturbances make a remarkably short list: 1. Climate change including ocean warming, sea level rise, and increased atmospheric CO2.. 2. Land-based sources of pollution, including land destabilization and sedimentation, sewage disposal, toxic pollution, and pathogens. 3. Over-fishing, including both the consequences of removal of fishes from reefs and the damage of fishing techniques and gears. Climate change is the only global influence in the list and is the umbrella under which all other stresses to reefs operate. Land-based sources of pollution are both regional and local. For example, a significant proportion of marine pollution is aerosols and runoff originating far from the ocean. Over-fishing is largely a local problem and responds to relatively simple if not easily implemented management regimes. Finally, note that these disturbances are characteristic not only of coral reefs but any coastal ocean area near human populations, according to Ogden. (2002) Coral bleaching isn’t the only detrimental effect of climate change on coral reefs. Prolonged seasonally warm temperatures stress corals and can increase the growth rate of the potentially pathogenic microorganisms responsible for coral diseases. Increased CO2 in the atmosphere lowers the saturation state of calcium carbonate (CaCO3) in the ocean. This has been shown to decrease coral reef calcification and may over time be an even more important factor than bleaching in the global adjustment of coral reefs to climate change as stated in Ogden’s research at Florida Institute of Oceanography. (2002) In summary, the world beneath sea is still a mystery for many of us. Its an entirely different world, the beauty of the ocean’s creatures, plants, vegetation, coral reefs are precisely a pleasant sight. The beautiful coral reefs known and loved by the entire world are rapidly moving towards their extinction due to certain disturbance in the earths climate. Considered as one of the richest sources for biodiversity; coral reefs are of numerous usages to mankind but unfortunately they are also one of the most abandoned marine animals. Not only did they benefit the sea creatures that inhabit them but also the environment and people by providing them Provide abundance of food and medicine material for research work. Protect coast from wave impact and storms. Tourist attraction. The extinction of coral reefs will have a disastrous effect on population that relies on them, mostly the fish and other marine creature that depend completely on reefs for their survival. Moreover, it would leave the seashore open to the effects of storm surges and may result in revenue loss from tourism. References Dustan, P. , 1999: Testimony Presentation on Coral Reef Conservation Issues at the Senate Subcom mittee Hearing on Oceans and Fisheries. Washington, DC. Coral Reefs under Multiple Stresses in an Era of Climate Change: John C. Ogden; Director, Florida Institute of Oceanography Professor of Biology, University of South Florida Pockley, P. , 2000: Global Warming Identified as Main Threat to Coral Reefs. Nature, 407 (6807), 932. Coral Reefs under Multiple Stresses in an Era of Climate Change: John C. Ogden; Director, Florida Institute of Oceanography Professor of Biology, University of South Florida Karan Singh, V. (2008, August 23). Coral Reef Dilemma!. Retrieved September 8, 2008, from http://ezinearticles. com/? Coral-Reef-Dilemma! id=1435286

IMac Case Study Example | Topics and Well Written Essays - 500 words

IMac - Case Study Example There was a compatitbility issue. The expensive hardware was hard to replace. It seemed the iMac was not what it was cracked up to be for Ronny. It was not reliable. There was a compatitbility issue. The expensive hardware was hard to replace. The iMac was not reliable. Ronny's computer skills were well-known because he had created an interesting geography puzzle for his classmates. He had also worked on secretly creating a new video game aim at improving mental skills of younger people. He needed to run the program on the latest version of the iMac so he could take advantage of the multimedia capabilities. The failure of the iMac saddened and worried Ronny. Trips to the repair shop wasted important time. He planned on entering his video game in contest by IBM. The iMac was not compatible with certain Microsoft builds. The video game development relied upon advanced technology. Testing is an important step in software development. The failure of Ronny's iMac to accept program modules created in Microsoft software turned out to be the biggest problem. iMac's are some of the most advanced computers. The weakness in this machine to run the important parts of Ronny's programs shook his confidence in Apple's products. The iMac hardware was too expensive. Ronny's father was also not able to replace his computer for him because of the expense.