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One Last Time George Mallory Step
695 wordsThe cold gray steel of the axe arced one last time through the air, the pick burrowed itself one last time into the frozen blanket of snow, and the hand that held it took a final pull, to ensure a secure placement. After a brief pause, George Mallory took a deep breath, and pulled himself over the crux, and onto the top. Slowly, shakily, he stood up, and took a look around, the first time American eyes had seen the world from this vantage point. This was it. He had done it. He was the first Amer...
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Myths And Legends Oxygen Atoms
878 wordsIn certain polar regions of the earth, a rare and fascinating phenomenon occurs in the dark season of winter. This phenomenon is called the Northern Lights, or auroras. In areas where auroras can be seen, the sun shines brightly for six months and then disappears for the next six. The sun follows a straight path across the sky, rising in the north and setting in the south. This is because of the latitude of these regions. Unlike other regions of earth, the polar regions either completely face th...
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Hydrogen Bombs Rain Forests
709 wordsPlanet Earth: Fate of The Earth was a powerful, informative, and inspirational documentary. The narrator, Richard Kiley, progressed through many points about our precious earth including her beginnings, her slow deterioration by man as well as other factors, and theories as to her what could be her end. The beginning images of earth, approximately four million years ago, can be described a barren yet fertile land with the prospect for life to flourish. Prehistoric volcanoes exploded with gases a...
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Problem Of Global Warming Amounts Of Carbon
456 wordsThe problem of global warming, an increase in the average temperature on Earth, is getting worse. The Earth has warmed 0. 3 to 0. 6 degrees Celsius since the late 1800 s. Scientists believe that the cause is the greenhouse effect, the process of trapping heat in the Earth's atmosphere because of the presence of large amounts of carbon dioxide, chlorofluorocarbons, methane, and nitrogen oxides. Less oxygen is being produced and cleaning the atmosphere allowing more of these gases to do its work o...
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Organ Donation Brain Dead
568 wordsThe debate regarding the ethical issues about organ donation and transplantation has been present for many years. This is primarily due to the unique exchange that must occur. No other treatment so intimately involves the public. People must donate their organs or tissues to make the treatment possible. The question that remains is why are people not donating their organs? One of the main reasons people do not donate organs is distrust of the medical profession. People are afraid that physicians...
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Description Of A Class Fire Extinguisher
766 wordsA fire extinguisher is a portable or movable apparatus used to put out a small fire by directing onto it a substance that cools the burning material, deprives the flame of oxygen, or interferes with the chemical reactions occurring in the flame. Water performs two of these functions: its conversion to steam absorbs heat, and the steam displaces the air from the vicinity of the flame. Many simple fire extinguishers, therefore, are small tanks equipped with hand pumps or sources of compressed gas ...
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Coal And Coke Diamond And Graphite Carbon
448 wordsCARBON AND HOW IT EFFECT OUR LIVES Although widely distributed in nature, carbon is not particularly plentiful (it makes up only about 0. 025 percent of the Earth's crust). Yet it forms more compounds than all the other elements combined. In 1961 the isotope carbon- 12 was selected to replace oxygen as the standard relative to which the atomic weights of all the other elements are measured; carbon- 14, which is radioactive, is the isotope used in radiocarbon dating and radio labeling. Elemental ...
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Sleep Apnea Sleep Disorder
1,248 wordsSleep Apnea Human Physiology - Biology 60 The dictionary defines sleep as "The natural periodic suspension of consciousness during which the powers of the body are restored" (Webster's 638) If one is waking up on an average of 300 times per night, the chances of complete body restoration are minimal. The Greek word apnea literally means "without breath." An estimated 30 million Americans stop breathing during their sleep sometimes 30 - 40 times per hour and often for a minute, or longer each tim...
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Coronary Heart Disease High Blood Pressure
2,216 wordsThe work is devoted to the description of the coronary heart disease which is now considered as holistic by the World Health Organization. There will be described the precautions due to which it is possible to avoid the disease, the risk factors of it, the statistics and the influence of the disease on the daily life of people. The work is aimed at making people understand that coronary heart disease is a very serious problem today, it is becoming an epidemic, and it is necessary to remember all...
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Massage Therapy Soft Tissues
1,618 wordsDifferent types of Massage from around the world and the effects they can have on your body. The art of massage is on of the most impressive technologies conquered by human hands. What can astonish more than magic of touch? Nothing I think and that is why increasing popularity of massage therapy doesnt surprise. What is massage therapy? According to definition found on Massage Therapy 101 Massage therapy is a hands on manipulation of soft tissues and joints of body. The soft tissues include musc...
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Hydrogen And Oxygen Simple Sugars
329 wordsCarbohydrate Structure and Function Carbohydrates are molecules composed of carbon, hydrogen, and oxygen. They are polymers of the basic units called monosaccharides. Dissaccharides are compound sugars, composed of two monosaccharides, (simple sugars) bonded together. Molecular Structure For example, two molecules of glucose can bond together to form the Disaccharide Maltose. Sucrose and Lactose are other common Disaccharides. Dissaccharides are formed through condensation reactions that result ...
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Life On Earth Newly Discovered
881 wordsUntil recently, scientists believed that the sole source of energy responsible for life on earth was the sun. In 1977, a group of scientists researching the theory of plate tectonics, traveled to the floor of the equatorial Pacific Ocean and discovered something that could possibly explain how life began on this planet. From the Galapagos Rifts thermal springs, scientists discovered densely populated communities of several species never before observed. Since that time the Federal Government has...
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H 2 O Mass Spectrometer
531 wordsAMass Spectrometer Mass Spectrometer A mass spectrometer produces charged particles (ions) from the chemical substances that are to be analyzed. The mass spectrometer then uses electric and magnetic fields to measure the mass (weight) of the charged particles. There are many different kinds of mass spectrometers, but all use magnetic and / or electric fields to exert forces on the charged particles produced from the chemicals to be analyzed. A basic mass spectrometer consists of three parts: 1. ...
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Electron Transport Plant Cells
602 wordsname = Fnord Discordia email = publish = yes subject = Biology title = Mitochondria and Chloroplast Essay papers = Biology Mitochondria and Chloroplast Essay I. Introduction Out of all the organelles there are two that have fascinated microbiologists for the past hundred years. The first is the mitochondria, nicknamed the powerhouse of the cell. The second is the chloroplast in plant cells that have functions similar to those of the mitochondria. What do these organelles do? What are the similar...
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Myocardial Infarction Coronary Arteries
562 wordsWhen Myocardial Infarction MYOCARDIAL INFARCTION When someone has a myocardial infarction (MI) people think a cold, right? Well its not, its a heart attack! Its the number one cause of death in the United States and kills about 330, 000 Americans each year. People dont realize how big the effect of a heart attack is until they experience their own. By then it is to late! Here are some information explaining the causes, symptoms, and the solution of a heart attack that will help you, your family,...
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Sickle Cell Anemia Red Blood Cells
827 wordsSickle Cell Sickle cell is the most common inherited blood disease, which causes waves of pain, damage to vital organs, and some die in childhood or early adulthood. The disease is most commonly found in blacks and Hispanics of Caribbean descent. Around one out of every 400 blacks inherits the sickle cell disease. Sickle cell occurs when two sickle cell genes or a combination of one sickle cell gene plus any one of several other hemoglobin genes. This report will go in depth with many major issu...
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Sickle Cell Anemia Sickle Cell Disease
879 wordsThe problem is that sickle cell anemia affects about 72, 000 Americans in the United States. Sickle cell anemia is an inherited disease in which the body is unable to produce normal hemoglobin, an iron-containing protein. Abnormal hemoglobin can morph cells that can become lodged in narrow blood vessels, blocking oxygen from reaching organs and tissues. The effects of sickle cell anemia are bouts of extreme pain, infectious, fever, jaundice, stroke, slow growth, organ, and failure. Sickle cell a...
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Sickle Cell Anemia Sickle Cell Disease
868 wordsThe problem is that sickle cell anemia affects about 72, 000 Americans in the United States. Sickle cell anemia is an inherited disease in which the body is unable to produce normal hemoglobin, an iron-containing protein. Abnormal hemoglobin can morph cells that can become lodged in narrow blood vessels, blocking oxygen from reaching organs and tissues. The effects of sickle cell anemia are bouts of extreme pain, infectious, fever, jaundice, stroke, slow growth, organ, and failure. Sickle cell a...
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Connective Tissue Breast Implants
1,260 wordsSilicon is an essential element in humans, found in significant concentrations in hair, bone, epidermis and dental enamel. It is also the second most abundant element on the earth? s crust, constituting about 28 % by weight. (cite) Many foods and beverages, including certain vegetables, grains, rice, and beer have been shown to contain significant amounts of silicon. Silicone is a synthetic form of silicon and includes 40 % silicon by weight. The silicones are synthetic polymers and are not ther...
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Bushnell Turtle Onboard Oxygen Supply Submarine
315 wordsMilitary submarines were invented by David Bushnell. He was born in Saybrook Connecticut in 1742, and died in 1824. He built the first military submarine in 1775. The name of this submarine was, ? Bushnell? s Turtle. ? The reason for this is because it looked like two turtle shells fused together to form an egg-like case. Lead ballast kept the craft upright and it was propelled by hand-operated screw-like devices. The submarine was submerged when a valve admitted sea-water into a ballast tank, a...
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