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Search results 2111 - 2120 of 22819 matching essays
- 2111: Chloroflourocarbons
- ... of skin cancer, cataracts, and impaired immune systems, and is expected to reduce crop yields, diminish the productivity of the oceans, and possibly contribute to the decline of amphibious populations that is occurring in the world. Besides CFCs, carbon tetrachloride methyl bromide, methyl chloroform, and halons also destroy the ozone. In 1985, the degradation of the ozone layer was confirmed when a large hole in the layer over Antarctica was reported ... percent since the mid-1960's with cumulative losses of about ten percent in the winter and spring. A five percent loss occurs in the summer and autumn over North America, Europe, and Australia. The world has been forced to address this issue. Thus, the major powers of the world created a global treaty, the Vienna Convention for the Protection of the Ozone Layer. The agreement was put into affect in 1988 and the subsequent Montreal Protocol on Substances that Deplete the Ozone layer ...
- 2112: Natural Disasters
- ... The research of my paper will involve storms that form in the Atlantic Ocean and effect The United States and its neighbors. The main reason that I have decided to research this part of the world and not look at the rest of the world is I live in this part of the United States and have been part of one of these storms. Also the data was much easier to research. Most people think of the Atlantic when they think of hurricanes. The first priority is to find out what exactly a hurricane is. A hurricane comes from the West Indian word hurricane, meaning "big wind" (New Orleans, weather). A hurricane forms in the tropics around warm water. It starts as a disorganized storm in the ocean. When it starts to become more organized, it will be put into the first ...
- 2113: The Positive Effects of DDT
- ... This is why DDT is known as the most effective pesticide ever produced (Ray 71). It is proven to have been the most effective chemical ever to prevent the spread of malaria all over the world. It nearly wiped out the disease in some countries altogether. It has been repeatedly proven that DDT does not cause any form of cancer in humans. Contrary to what environmentalist attacks on the pesticide have ... specifically clothes moths and parasites of both animals and plants. DDT was welcomed as a substitute for toxic insecticides like arsenic, mercury, fluorine, and lead (Whelan 70). It was used by the Allied troops during World War II in order to kill body lice without having harmful side-affects on humans. The elimination of the lice resulted in the absence of typhus fever (which was carried by the lice) among the ... led to its later use in pest control in agriculture and forestry. In 1968, one pound of DDT cost 17.5 cents (Whelan 70). So effective was DDT that its use spread all over the world, controlling the population of insects and pests on crops and forests. Before DDT was used, about 200 million people (Ray 68-69) every year were diagnosed as infected with malaria, and nearly two million ...
- 2114: El Nino
- ... islands. Weak events will raise the water temperature 2 to 4 degrees Celsius and will have minor impact on fishing. However strong events such as the 1982-83 event will disrupt climate conditions around the world as well as local conditions. It has been linked to floods and droughts all over the world. Hurricanes and tropical storms are also altered in their numbers by El Nino. Therefore it would be very helpful for people if El Nino could be predicted and prepared for in some form. During a ... fish populations are depleted solely due to exposure to El Nino. A decrease in their growth and reproductive success has been observed by many surveys in coastal waters. The link between climatic effects around the world and El Nino is now well established. It has taken many years of studying to understand how the pieces of the puzzle, from ocean currents to winds and heavy rains fit together. During the ...
- 2115: Genetic Engineering
- Genetic Engineering With the birth of new technology in the ever-growing field of genetic engineering, scientific extremists and those against technology have risen to block the future of genetics. According to Webster's Dictionary, Genetic engineering refers to the artificial modification ... pharmaceuticals and as sources of organs for transplantation into humans in the United States and abroad. Fish are being genetically engineered to grow larger and at a faster rate. According to U.S. News and World Report, many pharmaceutical drugs, including insulin, are already genetically engineered in the laboratory. Many enzymes used in the food industry, including rennet used in cheese production, are also available in genetically engineered form and are ... is unsafe; however, genetic engineering is a safe and powerful tool that will yield unprecedented results, specifically in the field of medicine". Burns went on to say that genetic engineering will lead us to a world where gene defects, bacterial disease, and even aging is a thing of the past. Gary Gardner, a scientist at the Center for Genetic Manipulation, stated that by understanding genetic engineering and its history, discovering ...
- 2116: The Influence of Black Slave Culture on Early America
- The Influence of Black Slave Culture on Early America The Black slaves of colonial America brought their own culture from Africa to the new land. Despite their persecution, the "slave culture" has contributed greatly to the development of America's own music, dance, art, and clothing. Music It is understandable that when Africans were torn from their homes and ... begins to chant his words rhythmically." Art 17th-century Africans had art forms that would be considered advanced even today. Most of their expression was religious in nature. But when they were brought to the New World, "…[slaves] could not do this because Protestants had always frowned upon religious imagery in the church as being worldly. Thus, there was little opportunity for the slave to express his creativity in graphic and ...
- 2117: Mass Media, Sex, and Pornography
- Mass Media, Sex, and Pornography It started by way of messengers and scribes, evolved through the presentation of newspapers and radio, brought us together with television, and now serves us world-wide via the ever-popular Internet. It is the mass media, and even from the earliest days of its existence, it has contributed greatly in ways that both enlighten and enrich society, and ways that deteriorate and perplex it. It is not a surprise to learn, then, that the mass media is the most powerful source of information we have, and nothing else in today's world influences public perception quite as heavily. Unfortunately, however, most of what is broadcast or transmitted in the news today is with reference to the chaotic condition of our planet, or something else that society as ... that pornography is largely a male interest, a noted increase in female interest would certainly cause an increase in the amount of pornographic material geared for women; this relates to the laws of the business world (Christensen 1990:50). Having discussed the untruthfulness of the claims against pornography and showing that pornography is not “evil”, it is now possible to consider the violence issue. Are men who are exposed to ...
- 2118: What Was The Effect of The Space Shuttle Challenger
- ... was started. It seems, out of all the mistakes that NASA and the United States government has ever made, this one made a lasting impression on many Americans, and foreign authority figures all over the world. The Space Shuttle Challenger disaster was a major tragedy. However, it was a tragedy that could have been prevented with a closer inspection of one of the shuttle's parts that had been of concern ... the time which showed the disbelief many had and how such a mistake could have been made. The deaths of the astronauts lie in the memories of many, including students across the country and the world. Christa McAuliffe's parents called them all "heroes" and that they have grief and condolences for all people effected everywhere by the tragedy. McAuliffe's parents were thankful that their lives were kept private during ... people, and made this lasting preach: "I lift up to God a fervent prayer so that he accepts in his embrace the souls of these courageous pioneers in progress of science and of man." (The New York Times, Jan. 30th, 1986; A16) Along with the Pope, Col. Muammar el-Qaddafi sent his "personal condolences" to the families and friends of the American astronauts. "It is a very sad day, not ...
- 2119: Sexual Harassment
- ... in which prestige, career opportunities, and pat fall because of automation or some other factor, causing men to leave and allowing women to move in. A good example of this trend is bank tellers. Before World War II, most tellers were male and made good money. After the war and with the advent of increased automation, salaries fell and men left the occupation. Today, ninety five percent of bank tellers are ... settled once for all. ENDNOTES 1 Madura Christopher, "America's Women: Meeting the challenges of today" Scholastic Update 119 (May 18, 1987): 5. 2 "State Farm is Stuck with a Colossal Claim," U.S. News & World Report 104 (February 1, 1988): 10. 3 Andrea Sachs, "A slap at sex stereotypes," Time 133 (May 15, 1989): 66. 4 Ibid., 66. 5 Paula Dryer, "Affirmative Action: After the debate, Opportunity," Business Week (February ... Aaron Bernstein, "So You Think You Have Come A Long Way, Baby?," Business Week (February 29, 1988): 49. 10 "Sex Segregation," 2. 11 Dryer, 36. 12 Elizabeth Ehrlich and Susan Garland, "For American Business, a New World of Workers," Business week (September 19, 1988): 112. 13 Christopher, 7. 14 Lois Romano, "Winning is The Best Revenge," Good House-keeping 208 (April 1, 1989): 49. 15 Ibid., 53. 16 Suzanne Imes ...
- 2120: Hitler And World War I
- The ambition to unite Germany under ein Volk, ein Reich (one people, one empire) was the primary goal of Adolf Hitler and the Nazi party from the beginning of World War I to the end of World War II. This was not, however, a simple goal to achieve. Like most of Hitler's speeches, his road to power similarly began slowly and quietly. His speeches and rise of power were both carefully ... gain power in Germany by becoming Chancellor; he gained consolidation of power in Germany by using energy, by utilizing propaganda and by succumbing to the immediate material interests and difficulties of the German society. After World War I, the "guilt clause" in the Treaty of Versailles caused Germany to lose not only territory and money, but German pride as well. Weimar government members had to bear the disgrace of signing ...
Search results 2111 - 2120 of 22819 matching essays
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