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Destruction Of The Ozone Layer

.... This is the ozone thinning theory: "CFCs release chlorine into the stratosphere... leading to ozone destruction and exposing the planet to harmful ultraviolet rays." Critics who discount the thinning theory still say that chlorine comes from natural sources like volcanic eruptions and does no permanent damage (Brooks 422). NASA researches claim that they have evidence that shows CFCs are to blame for ozone depletion. Natural chlorine is only about 1/5 of the chlorine in the stratosphere because most of it dissolves in the rain water before it reaches the ozone (Brooks 422). Oceans and volcanoes do release large amounts of ch .....

[ Download This Essay Now ] Number of words: 1152 | Number of pages: 5

Hurricanes

.... only a few reach hurricane status, which by international agreement requires wind speeds in excess of 119 kilometers per hour and a rotary circulation. Hurricanes average 600 kilometers in diameter, and often extend 12,000 meters above the ocean surface. From the outer edge of the hurricane to the center the barometric pressure has on occasion dropped 60 millibars, from 1010 to 950 millibars. The lowest pressure ever recorded in the United States was 892.31 millibars. The steep pressure generates the rapid, inward spiraling winds of a hurricane. As the inward rush nears the core of the storm, it is whirled upward. Upon ascend .....

[ Download This Essay Now ] Number of words: 1167 | Number of pages: 5

Electrochemistry

.... be done using electrochemical methods, and electrochemical methods are used in the large-to-medium-scale synthesis of organic "fine chemicals" because of the financial, safety and environmental advantages. Here's a page outlining some current research by one of my graduate school professors. I can think of at least three common uses of electrochemistry: pH meters and other measuring devices pH meters are electrochemical devices. They measure pH by comparing the electrical properties of a solution to those of a reference electrode. Other types of electrochemistry are used in other measurement applications. Electroplating If yo .....

[ Download This Essay Now ] Number of words: 455 | Number of pages: 2

Nuclear Weapons

.... the majority of the substance was used towards our nuclear weapons programs. Along with reactors, sometimes comes a meltdown which can cause harmful effects if it isn't controlled quickly enough. After such instances as the Hanford, Washington reactor meltdown and the accident in the U.S.S.R. at the Chernobyl site, no one wanted to hear about the use of plutonium. The United States government banned nuclear testing and also ended the production of plutonium. (Ref. 5) Now we are in a dilemma. We are in need of our future sources of energy to power our nation. We are running out of coal and oil to run our power pla .....

[ Download This Essay Now ] Number of words: 1991 | Number of pages: 8

Cloning

.... method of cloning used in Horticulture. Matching cuts are made in the stems of two plants, which are then fitted together so that their transport systems are in contact. The wounded area heals, and the two stems become a single physiological unit. All the McIntosh apple trees now in use and many other fruit varieties have been derived by grafting from single ancestral trees. "Nuclear transplantation," in which nuclei from cells of one individual are transferred to unfertilized eggs whose nuclei have been removed, is one method of artificial cloning in animals. All the transplanted nuclei are generally identical, and therefore th .....

[ Download This Essay Now ] Number of words: 1221 | Number of pages: 5

El Nino

.... trun, collapses the food chain. Thus, leaving our worlds subsistence and commercial fishermen with out food and money. With the already descendeing food chain on our earth, the warming water also effects the atmosphere, resulting in more extreme temperatures, more rain, and more drought periods, costing more money to our already debted economy, and the world. An example (demonstrated here by alaska) brought about by the extreme temperatures was during the 1976-77 el nino, which brought severe cold to the polar regions. The polar regions were so cold, that the bears in those regions did not hibernate. Studies have shown in alaska .....

[ Download This Essay Now ] Number of words: 398 | Number of pages: 2

Platinum

.... The grains also contain small amounts of iron, copper, chromium, and titanium. A large nugget of platinum will be found only on occasion, like in 1843, a lump weighing over 21 pounds was found in Russia. Russia produces the worlds largest share of platinum-group metals. Other important sources of platinum are located in the Transvaal province in South Africa and in Sudbury, Ont. Colombia and the United States also have sources of platinum. The United States uses about 475,000 troy ounces of platinum a year. About 1/5 of this comes from its own mines and from scrap. The rest is imported largely from Canada, which recovers .....

[ Download This Essay Now ] Number of words: 655 | Number of pages: 3

Why We Have Seasons

.... moves further north the temperature increases and the weather turns warmer. During the three months of spring the sun continues to move north and warming the earth more efficiently. At around June 21st the sun is directly facing the tropic of cancer. At this time the movement north comes to a halt and the earth's surface is at its warmest point, the summer solstice. It is also known as the longest day of the year when the earth is furthest away from the sun. During the winter the sun is actually closer to the sun, but it gets less heat because of the unstable amount of radiation. Throughout the spring months the sun is slo .....

[ Download This Essay Now ] Number of words: 780 | Number of pages: 3

The Mystery Of Area 51

.... would be the beginning of what might be one of mankind's most unexplained phenomenons in history. According to these ranchers, (who asked to be anonymous) a flying object came out of the South East and went flying into the Northwesterly direction. These ranchers observed it for 40 or 50 seconds before it disappeared behind the hills. They did not recall it making any sounds (Roswell 1). The next day, another rancher recovered a part of what is believed to be, the flying object that was seen the night before. According to the Las Vegas Review Journal, the man gave it to authorities, and it was sent to “higher authorization sett .....

[ Download This Essay Now ] Number of words: 1027 | Number of pages: 4

Animal Testing: Animals Suffer

.... in the book Intervention and Reflection displays and evokes the actual suffering of many harmless animals. "In 1953 R. Soloman, L. Kamin, and L. Wynne, experimenters at Harvard University, placed forty dogs in a device called a 'shuttle box,' which consists of a box divided into two compartments, separated by a barrier. Initially the barrier was set at the height of the dog's back. Hundreds of intense electric shocks were delivered to the dogs' feet through a grid floor.... they then blocked the passage between the compartments with a piece of plate glass .....

[ Download This Essay Now ] Number of words: 1444 | Number of pages: 6

The Aftermath Of Hurricane Mitch

.... Hundreds of homes, streets, and businesses were washed away, and those that remained standing found themselves anchored beneath several feet of mud and debris. In some places, the stench is overpowering. The smell from intermingled garbage, rotting food, rancid floodwater, animal and -- very possibly -- human corpses fills the air. Yet still people work near the water, clean goods in it, even bathe in it. The potential for disease cannot be understated. Homeowners squat along the muddy, contaminated waters, rinsing clothing, dishes, photographs -- anything that can be salvaged. Residents point to stretches where the .....

[ Download This Essay Now ] Number of words: 394 | Number of pages: 2

Mescaline

.... feelings of giddiness or anxiety, and a moderate dose of Mescaline (200-300mg) begins to impair the senses. Strong doses (300-500mg) will induce hallucinations and effect the user's perceptions of color, time, and space. Heavy does of Mescaline (500-700mg) and frequent use of mescaline will cause symptoms of schizophrenia, psychotic episodes, and may be fatal. At any point the user may also feel the effects of nausea, dizziness, depressed or increased breathing, as well as increased heart rate and blood pressure. Long term effects also include chromosomal damage and possible birth defects. Possibly due to it's euphoric qual .....

[ Download This Essay Now ] Number of words: 681 | Number of pages: 3

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