The Sahara Desert Essay Example | Topics and Well Written Essays - 1500 words

The Sahara Desert - Essay Example Most of such arid regions are because of the pattern of the Earth’s air circulation as well as the topography of the land. Sahara name its derivation emanates from an Arabic term Sahra meaning wilderness and the Arabic speakers use it to describe the barren nature of such a region. Sahara desert occupies 9.1 million square kilometres, which is almost equal to the area of the United States, which is 9.5 M Km2. The desert stretches all the way from the Atlantic Ocean to the Red sea and it is not only the hottest in the world but also the driest. It covers many countries in Africa especially the northern area. The Atlantic Ocean binds the Sahara desert from the west whereas; the Atlas Mountains and the Mediterranean Sea bind it from the North. In the East, the Red sea binds the desert, finally in the south, the Niger River partly binds the desert, and eventually the desert is exposed to semiarid lands known as the Sahel. Part of Sahara is plateau, which is elevated approximately 395-490 m above sea level. Mount Topside, which is as extinct volcano and the tallest mountain among the mountains of the Sahara, rises up to 3,265 m above sea level. The present deserts lay beneath what were seas in the ancient times. Because of this, ancient sands and calcareous deposits now foam sandstone and limestone found in these deserts. Sahara is a hot desert and the temperatures during summer daytimes exceed 90F for 8 months of the year, and often exceeding 100F (Osborne 27). The world record high temperature of 1370 F was evident in El Azizia, Libya; in North Africa’s Sahara Desert on September 13, 1922. The French colonial meteorologists measured this temperature 5 feet above the ground. The temperatures at night however drop by up to 50F. The nights are cold and in winter, they can fall below freezing (Osborne 27). There are three types of land surfaces in Sahara and they include Erg, Rag and Hamada (Keenan 43). Erg composes of dunes that have formed basins

WWII Uboat campaign Term Paper Example | Topics and Well Written Essays - 1000 words

WWII Uboat campaign - Term Paper Example German boats were equipped with 5 torpedoes and one main gun (Russell 122). U- Boats were mainly constructed for intelligence gathering of enemy movement and for launching special operations. German war planners very efficiently used U-boats to threaten and ultimately target the royal and merchant navy. U-boats sunk Royal navy and merchant ships sunk in huge numbers in different occasions. Restrictions of â€Å"treaty of Versailles† could not compel German navy to do away with submarine tactics during the Second World War (Gannon 47). Besides sinking battleships, boats also sunk an aircraft carrier in the Atlantic waters. U-boats almost compelled Britain war planners to consider surrender in the war. After the completion of German campaign in Western Europe, Hitler’s navy employed all the u-boats in Atlantic for patrolling the waters. This posed great threat to British merchant fleet as very less escort was available to guard the ships against German u-boat attacks. Sub marines had already proved the metal in the First World War but after passing about 20 years the U-boat tactics played havoc in Atlantic waters (Russell 119). U-boats played an important part in world war two, Winston Churchill claimed that U-boat war in Atlantic was so impressive and result oriented that Britain was forced to consider surrender during the Second World War.... German navy decided to target merchant fleets to threaten trade in the Atlantic. Merchant fleets used to travel with inadequate fleet so vulnerability to German attacks was already increased. It was almost impossible for Britain to provide complete protection and aerial cover to fleets throughout their Atlantic route. German navy started analyzing the points on the sea route where these fleets were coverless and no aerial or naval support available to merchant ships (Showell 71). Mid Atlantic was one of the lucrative options for attacking these fleets. The royal Britain navy was already over tasked in different regions of the world. Royal navy was facing challenging situation in accomplishment of the tasks in Atlantic, Far East and the Mediterranean. Therefore, the royal navy was already overstretched in the war. Such huge tasks of royal navy demanded careful planning and use of intelligence and tactics from naval and army commanders (Russell 132). Royal navy was greatly assisted by the French navy in defending the Mediterranean. Germany had 56 boats out of which only 46 were operational at the start of the war. According to the understanding of the famous â€Å"treaty of Versailles† Germany was not allowed to maintain any submarine as part of its naval fleet (Stern 58). Therefore, Germany took other measures by sending the troops abroad for submarine training. The treaty posed no restrictions on training the troops for anti submarine tasks. U-boat commanders were told to target merchant ships in Atlantic to break the backbone of British trade. In august 39, seventeen U-boats were sent to Atlantic Ocean with the mission of patrolling and laying mines (Showell 72). At the start of the battle, u-30 attacked and sunk liner â€Å"thania† casting 112 life causalities

Mismatch Repair Genes and Cancer Essay Example | Topics and Well Written Essays - 500 words

Mismatch Repair Genes and Cancer - Essay Example The study attempted to screen for two major types of mutations. One type of mutation that was tested for was the loss of heterozygosity, which is a type of mutation that generates a change in the type of genetic transmission of cells. The other type of mutation that was screened in the study was microsatellite instability. This mutation is usually observed in long sequences that were composed of repeating segments. These two types of mutations were considered to be important in determining whether a certain gene does influence the development of cancer. The study was conducted in a Portugese hospital, wherein approximately 287 patient subjects participants. These patients were already diagnosed to have breast cancer. In addition, there were 547 individuals who also participated in the study as controls, or individuals who were pre-determined to be normal and healthy. The study wanted to estimate the chances of developing breast cancer based on the presence and number of mutations in the MMR genes that were studied. The MMR genes tested in the investigation included the mismatch repair genes of the MSH family, as well as that of the MLH family. The PMS1 and MUTYH were also other genes that belonged to the MMR class of repair genes.

Analyzing Understanding the War on Terror 3rd Edition Essay

Analyzing Understanding the War on Terror 3rd Edition - Essay Example It was probably then when the notion of America on war with terrorism took birth. Later on, George W. Bush, US President and other officials of USA having high ranks used this term of War on Terror extensively to show that America is against terrorism and the organisations that use weapons and keep armaments for the purpose of spreading terror. This campaign was started because these terrorist organisations were not only causing threat to USA but they are threatening to other countries as well. Such militant organisations are dangerous for humanity on the whole. The phrase of the war on terror is particularly used against militant Islamic organisations like al-Qaeda. On the other hand, the present President of USA Barack Obama does not use the terminology of war on terror officially as he makes use of the term Overseas Contingency Operation for the same idea as that of war on terror. But the term of the war on terror is still in use and is used by political persons in media and some parts of government also makes use of it e.g. Global War on Terrorism Service Medal. Some people believe that the term of the war on terror was introduced by the US President George W. Bush after the 9/11 terrorists attacks on the twin towers of USA. The term the war of terror is developed to show America’s clash with the people who have Islamic extremist thoughts. This term of the war on terror was selected by George W. Bush when the higher officials of USA wanted to introduce the term "global struggle against violent extremism† (Coaty and Babst, pp. 222–228). USA had already a strained relationship with Iraq and also with Afghanistan which was led by Taliban. This stress in relationship occurred as a result of Gulf War of 1991 but the situation worsened and the terrorists’ attacks on the Twin Towers on 9 September 2011 made the US President Bush to take some steps against terrorism. The attack on the Twin Towers is observed as the attack on humanity and not on USA alone. Terrorism is a problem which has threatened not only America but also its allies and other independent countries. Furthermore, after the 9/11 attacks on the Twin Towers the anthrax-laced letters which were sent to USA took the lives of five American people and it is thought to be the worst biological attack in the history of USA created by Islamist militant extremists, according to the Federal Bureau of Investigation (FBI). As these events occurred together so United States of America had to take an action. The union of happenings forced USA to make amendments in its foreign policy as well as domestic policy. As a consequence, American officials drafted USA Patriot Act and also developed Department of Homeland Security. These steps helped in the renovation of the security measures such as operation involving investigation and intelligence. Along with the alterations made in the domestic and foreign policy the President Bush ordered the Taliban government of Afghani stan to give Osama Bin Laden to the US government. It was suspected that Osama bin Laden was the hand behind these terrorists’ attacks and it is he who developed the whole plan of terrorism and executed it. Along with Osama bin Laden, US government wanted to capture other members of al-Qaeda which could be a threat for any further act of terrorism. But the government of Taliban did not accept the orders of President Bush which made US President to start operations of war against

The Religious Teachings of Gandhi Essay Example | Topics and Well Written Essays - 1000 words

The Religious Teachings of Gandhi - Essay Example Later on, Gandhi remarked that all religions are equal and there is only one God through different interpretations of various religions. This research paper provides a broad based understanding of Gandhi’s views on religions and also provides an understanding on his ideas on Jainism he learned from his mother as well as ideas of Jainism as a religion in its own right. Gandhi says that God is invisible but has many names and different forms to it. This paper shall be divided into two parts. The first part shall deal with the learning Gandhi adopted while going through various diverse experiences during his time as a lawyer in India and then in South Africa. The second part of the paper shall deal with his learning of Jainism, which his mom taught him as well as the other teachings, and learning of Jainism, which the writer is going to extract and put down in a brief format in this essay. Gandhi’s Religious and Philosophical Learnings: At the outset as a young boy Gandhi was not much into religious teachings and following the concept of God. He tried to defy his family and friends by making fun of the teachings and took pride in the fact that he experimented with meat at the age of 15. However, his mother was a staunch follower of Hinduism and she kept on instilling the beliefs of Hinduism, which at a young age did not inspire him much, but later on as he grew into a man and started living on his own, the ideas came to him and he took inspiration form the teachings of his mother. (Hill, B) When Gandhi embarked to England, he started reading the Bible and the Bhagvad Gita very religiously. He became a devotee in the teachings of these holy books, and soon when he came back to India he started practicing the teachings of the holy books he had read while he was in England. Despite his youthful resistance to religion, Gandhi did resort to understanding the intellectual aspect of the religions, which he had learned from his mother, with regard to Jainism and Hinduism. He appreciated he intellectual beauty that the religions showed and displayed in their understandings. Gandhi was an honest man and refused to cheat in school even when he was told by his headmaster to do the same. Once he landed in South Africa, Gandhi took to meditation in a religious manner. He also began the movement for the NRI in South Africa who were discriminated against by the white people, and Gandhi’s religious teachings allowed him to take a strong moral stand on this issue. Gandhi started the uprising against the white people claiming that each and every man is a son/daughter to the God and that all men are equally born before God, and therefore they should not be treated unequally or be discriminated against. Gandhi often found the inspiration of God from his heroes, which he admired during his lifetime. Gandhi’s quest for the truth kept him inspired to read the religious texts deeply and wholeheartedly. He devoted a lot of his time in unde rstanding the meaning of the Koran, Bible and the Gita, and applied the fundamentals of these books in his every day life, where morality was second to none, as well as non-violence, which he criticized the Gita for. During a visit to Rome, Gandhi was brought to tears when he looked at the Michelangelo’s panting of the Sistine chapel. An individual wh asked him the reason for his tears, he said that he believed in al forms of religions and did not restrict his beliefs to only Hinduism, as he was the man of God and believed in the ideology of God as One and all, and he was the follower of all religions. Gandhi in his teachings has practiced and

Compare and Contrast Augustine(Political Writing) and Aquinas (The Essay

Compare and Contrast Augustine(Political Writing) and Aquinas (The Political Ideas Of ST. Thomas Aquinas) - Essay Example While some thinkers have argued for theological positions such as Christian communism, others propose that Christians should have limited participation in politics. Saint Augustine and Thomas Aquinas’ works attempt to provide a harmonious relationship between politics and Christianity. Augustine and Aquinas thoughts on politics are similar in terms of their theological positions, and differ in terms of Augustine’s theological outlook and Aquinas’s rational position on matters. Augustine, as a classical theologian, had notable works that he produced on politics. This occurred in spite of his firm grounding on religion. Augustine’s work had remained as classical in defining religion’s relationship with the society. Augustine discusses dual citizenship in terms of heaven and earth. He recognizes that human beings are bound to the functioning of the earthly state and the heavenly kingdom. Augustine allegorically refers to cities, the earthly city and th e city of God. The earthly city belongs to the class of individuals who are damned. According to Augustine, such individuals do not possess God’s blessings (Saint Augustine 5). On the other hand, the people in the City of God have God’s blessings. The City of God surpasses earthly institutions such as the state. On the other hand, Thomas Aquinas is a theologian who embarked on a study of the church within an intellectual frame. This explains why the papacy recommended Aquinas’s texts as preliminary in attaining ordainments. This suggests that these two scholars shared a similarity in articulating an objective view of the church. In turn, they had designed a philosophical outlook on spiritual matters. It is essential to highlight that Augustine and Aquinas shared similar convictions about wars. The scholars agree that war can be a just affair as long as it builds on certain premises. According to Aquinas, war is necessary as a means of defense. In addition, war i s vital in the event of ensuring long-term peace. Aquinas laid out Augustine’s principles in justifying given wars. To begin with, there has to be considerable possibilities of winning a given war. In addition, a strong central authority should be responsible for waging such a war. The third premise stated that peace was to be the central motive in pursuing a war. Similarly, Augustine had proposed pacifism as a Christian way of living. This means that Christians should oppose war and violence as a means of initiating conflict resolution. Augustine, however, asserted that peacefulness in the case of a serious wrong, which only violence could stop, is a sin Saint (Augustine 29). Augustine states that defense of the self and others could be necessary in the case of an attack. A legitimate authority, however, has to approve such a defense. In as much as Augustine did not explicitly state the components of a just war, he, in an indirect sense, coined the term in The City of God wo rk. In this sense, it was sometimes necessary to have a war that helped preserve peace in the long-term. All the same, Augustine insisted that war should not be preemptive. This is a functional outlook on war that Aquinas uses to lay out the components of a just war. Both Aquinas and Augustine believe that the state is instrumental in safeguarding a common interest. Augustine discusses this concept in the scope of a political community. Aquinas discusses the state’s purpose in terms of justice. According to Augustine, both the state and the

Food Predicament Essay Example for Free

Food Predicament Essay 1. List three factors largely responsible for the significant increase in North American food production since the end of World War II. a. Population Growth b. Rising personal income 2. Describe the trends in world food production vis-a-vis population growth from 1950 to the present. There is more people to supply food than before. 3. To what extent does expanding the amount of land under cultivation offer hope for significantly increasing world food supply? Why? To permit unproductive lands to be farmed, making it possible to raise two to three crops a year on the same land. 4. List four reasons for the loss of currently productive agricultural land. a. erosion b. desertification c. salinization d. water-logging 5. What factors make it unlikely that ocean fish harvests can be increased substantially above present levels? Large predator fish, overexploitation by industrial fishing fleets has reduced stocks of some species. 6. List several changes in food-handling practices that poor countries could implement to prevent loss of harvested crops. Store grains in bins that may not be easily penetrated, have good refrigeration and have reliable transport for the food. 7. To what extent can eating lower on the food chain help to solve problems of world hunger? It will help until the population grows more and going vegetarian would not be possible. 8. Why are a number of relatively affluent countries purchasing farmland in other nations? What are the advantages and disadvantages of such purchases for the host country? Because of the productive soil their food will grow much better in each different region. Some advantages might be that they will have that food available for the consumers and some disadvantages might be that there is a climate change and loose the crop. B. Match the following deficiency diseases with the nutritional factor (shown below the table) whose absence provoked these conditions (you can use the factor or corresponding letter (a, b, .): 1. childhood blindness 2. marasmus 3. anemia 4. kwashiorkor 5. mental retardation 6. pellagra 7. scurvy 8. rickets 9. beri-beri a. protein b. fiber c. vitamin A d. vitamin Bl (thiamine) e. vitamin C f. vitamin D g. vitamin E h. niacin i. iodine j. iron k. overall calorie/protein shortage C. True/False. Indicate T or F in the space before each numbered question. If the statement is false, revise it below in the box provided to make a correct statement; focus your response on the words in bold. 1. As incomes rise, food demand increases because more affluent people eat larger quantities of food. 2. It is estimated that approximately a billion people in the world today are undernourished. 3.Within families in poor societies, adolescent boys are the most likely to suffer from malnutrition. 4. Overpopulation is the major cause of chronic hunger problems in the developing world. 5. In societies where hunger is widespread, the rate of malnutrition among children and women is much higher than it is among men. 6. Malnutrition is most harmful when it occurs among children under 5. 7. The damaging effects of childhood malnutrition are reversible if the child receives an adequate diet when he/she becomes older. 8. Malnourished women are likely to give birth to underweight babies and to produce poor quality breast milk. 9. Marasmus is responsible for more childhood deaths in developing countries than any other single cause. 10. The most common nutritional deficiency disease worldwide is kwashiorkor. 11. A swollen belly, discoloration of the hair and skin, and stunted physical development are all classic symptoms of overall protein/calorie deprivation. 12. The worlds single most important cause of preventable brain damage and mental retardation is Vitamin A deficiency. 13. Aquaculrure offers greater hope for increasing the worlds fish harvest than does intensifying efforts in ocean fishing. 14. World livestock production, which rose steadily from 1950-1990, has subsequently leveled off because of falling market demand for meat. 15. Anemia is a leading cause of high female mortality rates and problem pregnancies in many poor countries. 16. Aquaculture supplies almost all of the tuna fish found in American supermarkets. 17. Biotechnology can help reduce farmers reliance on chemical fertilizers and pesticides and may make it possible to cultivate lands currently too dry or too saline for farming. 18. Among species commonly raised to supply animal protein for human consumption, fish are the most efficient energy converters, requiring just 2-3 pounds of feed to gain one pound of flesh. 19. In sub-Saharan Africa, grain production has remained stagnant at about one ton/ hectare since the early 1960s. 20. Significant increases in agricultural production achieved by technological breakthroughs such as the miracle grains or genetically modified crop and livestock varieties will ensure that all the worlds people enjoy an adequate diet.