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Search results 3731 - 3740 of 12257 matching essays
- 3731: The Forever Moving Land
- ... plates at convergent boundaries. Most faults are produced by this compressional force. Like normal faults, these faults also cause vertical movements where one side is pushed upwards vertically on an inclined plane. These faults produce high vertical 'upward-fault' structures called horst. Strike slip or transform faults are lateral movements of faults at the transformed boundaries. Strike-slip faults do not produce any cliffs but they can produce rift valleys. Tectonic ... up the crust is scraped off by the other continent. With the continental crusts pushing together, the sedimentary rocks are compressed into complex folds where the folds themselves fold as well. This process forms the high alpine mountains such as the Himalayas which were caused by India crashing into Asia. If the mantle is always being convected back down into the depths of the Earth, then why doesn't the continents ... or wonder. Convection cells that propel the plates produces Earth's surface dynamics. Murderous earthquakes and violent storms of volcanoes are a result from these ever-dynamic floating plates. Earth's crust juts out as high as the sky along with the deep valleys that are being produced from the crashing and spreading of these plates. Upwelling of hot magma separates the land and continents similar to the separation of ...
- 3732: Should Governments Use Private
- ... to the limits by federal funding cuts. A private enterprise economy creates a competitive environment. People work harder and are more initiative and productive. Let's take computer as an example. In the old day, high-tech computers were only used in military. Computers controlled all kinds of nuclear weapons, missiles, and space stations. But ever since the free market economy was introduced, computer production grew rapidly. Company like IBM, Intel ... Bill Gate, the guy who created Microsoft, started the business when he was still a university student. He believed he would make an effort and changes in the computer world. So he dropped out of school and formed a small company. As we all can see that this small company now makes the most revenue than any other big corporations in the world. This means that people like you and me ...
- 3733: Copper and Molybdenum Deposits in the United States
- ... nation has abundant domestic copper ore reserves but because of many detrimental economic factors much of the copper used by the U.S. industry is imported. Molybdenum ore is profuse and exports of it are high to fulfill the needs of foreign demand. Copper was first used by people around 4000 B.C. in the manufacture of tools because of its malleability and later became an important additive in harder, more ... developed into weathered outcrops overlying enriched zones containing chalcocite and other sulfides. There are 31 U.S. porphyry copper locations with an average grade of .54% copper ranging from a low of .31% to a high of .94%. Another type of porphyry is the copper-gold porphyry in Dos Pobres, Arizona composed of a stockwork of chalcopyrite, bornite, and magnetite veinlets in porphyritic intrusions. The igneous associations of the copper-gold ... 504,700 kg Au, 2,473,000 t Pb, 1,038,000 t Zn and 8,421,000 kg Ag. The first of the porphyry molybdenum deposits is a site in Climax, Colorado. The granite- high F porphyry is an umbrella-shaped stockwork of molybdenite, quartz, and fluorite in a Tertiary aged granite porphyry composed of 75% SiO2 cut by dikes and breccias. Molybdenite, quartz, fluorite, and sometimes K-feldspar, ...
- 3734: RedScare
- ... though Allen΄s treatment toward Poe is not exactly known, we know that Allen never treated Poe with sensitivity. In 1815, the Allen family moved to England on business. There, Poe entered the Manor-House School in Stoke-Newington, a London suburb. This school taught him "the gothic architecture and historical landscape of the region made a deep imprint on his youthful imagination, which would effect his adult writings" (Levin, 14). The Allens left England in June 1820, and arrived in Richmond on August 2. Here, Poe entered the English and Classical School of Joseph H. Clarke, a graduate of Trinity College in Dublin. On February 14, 1826, Poe entered the University of Virginia. Though he spent more time gambling and drinking than studying, he won top ...
- 3735: Hemp: The Truth About the Earth's Greatest Plant
- ... It is estimated that if hemp were widely grown in the U.S., it could supply 100% of the nation's energy needs. Hemp seeds are also a source of many products. The seeds contain high protein oil that can be used for human and animal consumption. Hemp oil is not intoxicating. Extracting hemp oil is cheaper than processing soy beans and it can be processed and flavored in any way ... can. Hemp oil can also be used to make butter, cheese, and tofu. In addition to food products, hemp oil can be used to make paint, varnish, ink, and plastic substitutes. One of the many high points of hemp is that it's easily grown. Unlike almost all hemp substitutes, hemp can be grown in all fifty states. During the Second World War, the government temporarily re-legalized hemp so farmers could grow it for the war effort. Hemp helped win World War II! It is high time for this country to take a second look at this product. After reading these facts I challenge anyone to come up with a reason to maintain the hemp prohibition. Two of our founding ...
- 3736: Reconstruction
- ... educational system for their children as well as for themselves. And gradually, towards the end of the reconstruction in 1875, in states like Mississippi, Florida, and South Carolina approximately half of all children went to school. With the same amount of knowledge available to African Americans as there was for whites, it led them to get slightly better jobs, with better pay. The main idea behind African Americans being given the right to a school system was a good one, as well as an important addition to the Souths new government. However it subconsciously began the insatiable chain reaction of segregation. Segregation existed in all the public universities, except ... University of South Carolina. Instead of following the African Americans into an already established schooling that the whites set up and attended, their 14th Amendment rights were violated, and they were placed in a separate school. As much as the Reconstruction failed to change in equal educational rights, it failed in civil rights as well. A person can easily say that the only successful social achievement that came out of ...
- 3737: El Nino
- ... is lower than normal. Finally, thermocline rises in the west, making upwelling easier and water colder. Air pressures at sea level in the South Pacific seesaw back and forth between two distinct patterns. In the high index phase, also called "Southern Oscillation", pressure is higher near and to the east of Tahiti than farther to the west near Darwin. The east-west pressure difference along the equator causes the surface air ... will have an effect on the winds. When the easterlies are blowing at full strength, the upwelling of cold water along the equatorial Pacific chills the air above it, making it too dense to rise high enough for water vapor to condense to form clouds and raindrops. As a result, this part of the ocean stays indubitably free of clouds during normal years and the rain in the equatorial belt is ... events have quite an effect on global weather patterns. Hopefully, as scientists develop better models, they will soon be better able to understand and make predictions about this curious event. Normally, the thermocline is quite high in the eastern Pacific. Stirring by the wind mixed the nutrient-rich water below with the surface water. In the presence of sunlight, phytoplankton can produce chlorophyll, a tiny green plant substance. In turn, ...
- 3738: Deforestation
- ... in the temperate/boreal regions and 42% in the tropics. For about a millennium, people have benefited from the forests. Forest products range from simple fuelwood and building poles to sophisticated natural medicines, and from high- tech wood based manufactures to paper products. Environmental benefits include water flow control, soil conservation, and atmospheric influences. Brazil's Amozonia contains half of the world's tropical rain forests. The forests cover a region ... losing about 20.4 million hectares of tropical forests annually and if these figures are not reduced, we will lose all of our tropical forests in about 50 years. It has been suggested that the high deforestation rates are caused partly by the fact that the new surveys are more accurate and thus reveal old deforestation rates that have not been detected with older methods. At first there was concern only ... last well into the next century. All that changed in 1985 when Charles Hurwitz of the New York based MAXXAM group bought the company and financed the take-over by issuing some $800 million in high interest bonds. To pay the dept., Hurwitz doubled the rate of logging. Since the late 1980's huge tracts of land have been clear-cut. Economically the result has been a logging boom which ...
- 3739: Death of a Planet
- ... alcohol is ethanol. Ethanol is produced from grains or sugar. Cars fueled by alcohol could produce as much as 80 to 90 percent less emissions than cars fueled with gasoline. Both methanol and ethanol are high octane liquid fuels. The reason why these two fuels are possible alternatives is because they are efficient and made from natural ingredients, and they pollute less (4 factsheet, OMS-4). Another alternative fuel is electricity ... an emissions testing program soon. The test is very simple. A car is tested for hydrocarbons and other ground level ozone forming chemicals that are released through car exhaust. If the level of pollutants is high, the car fails the test. Then the car must be taken to a mechanic, so the engine can be tuned to release fewer chemicals into the air. After the car is taken to a mechanic ... of hydrocarbon emissions released by the car. The system can't measure nitrogen oxide emissions yet, but researchers are working on another system to go along with this device. If the car is releasing a high level of hydrocarbon emissions a video camera takes a picture of the car's license plate, and sends the license plate number and the emissions data to a computer (1 factsheet, OMS-15). Then ...
- 3740: Alice Walker 2
- ... Over that next six years she would not ever hold her head up, Alice found that children were mean, they couldn t live with her difference and neither could she. During her sophomore year of high school she had the ugly scar tissue removed, now all that was left was a thin glass like line. Soon after her life turned around. She had her first boy friend and she earned valedictorian of ...
Search results 3731 - 3740 of 12257 matching essays
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