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Free research essays on topics related to: calcium

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  • Pollution And The Advance Of Technology
    1,196 words
    Technology is a major part of everyone's life. Everyday we encounter technology at home, school and at work. We use this technology to better our lives. But do we really? With the advancing of technology also comes the issue of polluting the world we live in. We take the automobile for granted, but as we use it, we contribute to the growing pollution problem. Now in the year 2000, car companies have recognized the pollution problem, and have advanced their own technology to help make a differenc...
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  • Blood Flow Blood Clot
    730 words
    Atherosclerosis is the hardening of the innermost portion of the arteries; it is also the most common form of arteriosclerosis. With atherosclerosis, fatty material containing cholesterol or calcium is deposited on the innermost layer of the artery. The result is a narrowing of the inside diameter of the blood vessel, constricting blood flow... This can progress to the point where the artery becomes so narrow that a blood clot, or thrombus, forms and blocks blood flow to an entire portion of the...
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  • Natural Selection And Diseases
    1,383 words
    Cystic fibrosis, Tay-Sachs, and hypertension are three very different, yet deadly diseases. The question arises how these diseases have survived for so long. Three articles attempt to uncover the mystery behind these diseases. It has been found that there were benefits to each of these diseases, which allowed the allele to remain in the community for such a long period of time. Natural selection plays a large part in the success of these conditions. First, cystic fibrosis has been found to be pr...
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  • Recommended Daily Value Exceeded The Recommended Intake
    750 words
    After assessing my diet through the process of recording my intake of food over the course of two days and analyzing its nutritional value, relative to my gender, weight, height, activity level and age, I have successfully reached several conclusions about my current dietary habits. Prior to this analysis of my diet, I was unsuspecting of some of my bad habits which were unbeknownst to me at the time and as a result, I was fairly shocked to see the results. Among the aspects which were particula...
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  • Amounts Of Food Heart Disease
    805 words
    Before contact with the western world, the Inuit were a relatively healthy population. However, the severe climate in which they resided posed challenges in maintaining health and well being. Here are some of the difficulties they faced and their adaptations to combat these problems: Avoiding Vitamin Deficiencies: The vegetation in the arctic habitat is relatively scarce. In order to prevent disease such as scurvy and rickets, and to assure calcium absorption the Inuit needed sufficient amounts ...
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  • 2 O 2 Bodies Of Water
    1,333 words
    Acid rain pollution comes in various forms. Whether its toxic waste, CFCs, or sewage, they are all hazardous to the earth. These can deplete the earth and its inhabitants of resources, causing a harmful change. A product of pollution is acid rain. We shall see that acidification is harmful to all forms of life. Acid rain is any form of precipitation that is polluted by sulphur dioxide (SO 2), and nitrogen oxides (NOX). This acid precipitation can be in the form of rain, snow, sleet, fog, or clou...
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  • Muscle Fibers Skeletal Muscles
    1,165 words
    Introduction With the introduction of such modern conveniences such as the automobile, remote control, and even the electric toothbrush people are relying on technology to do everything for them. With a generation growing up in todays society physical tasks have almost become obsolete. Tasks such as even going shopping and going out to visit a friend can be done from the comfort of your own computer. With this sedentary lifestyle, muscular size will almost be unnecessary, except for the athlete ...
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  • Ph Of 5 H 2 O
    1,124 words
    ... s the fish can no longer breath. It dies and then sinks to the bottom of the lake. [ 4 ] Scientists now see acid, aluminum and shortages of calcium as the three determining factors in the extinction of fish. [ 5 ] As well there is the problem of chlorine. In many parts of the world it is commonly found in the soil. If it enters the fish's environment it can be deadly. It affects many of the fish's organisms and causes it to die. As well it interferes in the photosynthesis process in plants. ...
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  • Tragedy Of The Commons Coral Reefs
    998 words
    Research in the Disciplines First Paper Final Draft Tragedy of the commons invading our environmental rights: Case study Coral Reefs In our world there are many resources, all of which people do not have a choice in sharing such as our air and our oceans. These resources are looked at as infinite, although this is not actually the case. Each time one person does something to pollute or use these types of resources, it affects the whole of society. This is the idea of the tragedy of the commons. ...
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  • Physical Environment Ability T
    805 words
    Ecosystem Succession and Nutrient Retention Outline: Introduction Identification of definitions Paper goals Body Various Ecosystems Role of nutrients Conclusion Future research offers Possible applications of research results This research article deals with ec system success and nutrient retention. Ecsystem's are pen systems in which biochemical functions consist f inputs frm varius sources, ut puts t varius sinks and a variable degree f internal recycling (Peter M. Vitusek and William A. Reine...
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  • Pregnant Women Vitamin C
    1,364 words
    It is symbolic that since the ancient times women kept the knowledge about various herbs and their effect on human body. This information was passed from one generation to another, later, the recipes have been written down. In the Middle Ages, people believed in the power of herbs and treated all their diseases using herbal products. There was a special group of herbs to be used during pregnancy. For example, white water-lilies were widely used to make the delivery less painful. Nowadays, homeop...
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  • Nitric Acid Scientific American
    825 words
    Chemistry Connections of nitrogen - saltpeter, nitric acid, ammonia - were known long before invention of nitrogen in a free condition. In 1772 D. Rutherford, burning phosphorus and other substances in a glass bell, has shown that the gas remaining after combustion does not support breath and burning. He named it suffocating air. In 1787 A. Lavoisier has established, that the "vital" and "suffocating" gases included in air, are simple substances, and has offered the name "nitrogen." In 1784 G. C...
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  • Dietary Supplements Proper Nutrition
    1,203 words
    Are Vitamins Really Good? As the 20 th century draws to a close medical sciences concerns differ significantly from those of earlier years. According to the Background on Adult Nutrition from the Family Haven site: prior to World War II, Americans main nutritional problems stemmed from lack of sufficient food or variety of foods. Nutrition scientists of that era focused on defining essential nutrients, primarily vitamins, in order to outline the minimum food intake for good health. (Flex) Vitami...
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  • Bone Tissue Blood Vessels
    391 words
    2 a) Functions of: skeleton: To provide support and protection of body parts. It acts as sites for muscle attachment, blood cell production, and calcium and phosphate storage. Cartilage: Serves as structural models for bones that replace them. It maintains the shape of the nose, outer ear, and other body parts. It also serves to custom joints between adjacent bones of the vertebral column, limbs, hands, and elsewhere. Ligaments: These bridge the gap between bones Tendons: Cords or straps of conn...
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  • Soluble Vitamins Fat Soluble
    582 words
    Vitamins are a natural living compounds required in the diet humans eat for normal growth and maintenance of life. Vitamins function as cofactors in metabolisms of products in the body. Vitamins cant replace food. Vitamins must be supplied in the diet or in the dietary supplement. Thats why doctors suggest taking vitamins with a meal. A well-balanced diet including plenty amounts of fruit and vegetables plus eggs, meat, and fish. Vitamins help regulate metabolisms. They also help convert fats an...
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  • Food And Shelter Coral Reefs
    682 words
    Corals and Adaptations Coral reefs are among the most diverse and productive communities on Earth. They are found in the warm, clear, shallow waters of tropical oceans worldwide. Reefs have functions ranging from providing food and shelter to fish and invertebrates, to protecting the shore from erosion. Although many corals resemble plants, they are actually members of the animal phylum Cnidaria. Most corals are colonial, which means that each coral is made up of many individual polyps connected...
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  • People In The United States Liquid Nitrogen
    1,594 words
    From the time theyre born, human beings are driven by an impulse to take things apart and put them back together. A small group of maverick scientists have decided to take this process one step further. Their project, called cryonics, aims to take apart and reassemble the worlds most complicated machine: the human body (Epstein 16). Cryonics is the practice of freezing human bodies in the hope that one day, it is possible to revive these people and restore them back to health. Although this idea...
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  • Saturated Fat Eating Disorders
    506 words
    Good Nutrition for Teenagers This article is about a good nutritional diet for growing teenagers. It is very important for teens to eat a certain amount of a certain type of food each day. When girls are almost done fully growing, they start to add some fat padding. But for boys, they begin to gain muscle and increasing the volume of blood. These changes often encourage girls to diet so that they will stay slim. Boys end up overeating to satisfy their appetites. Both of these could end up leadin...
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  • Results In Reduced Phosphates And Nitrates Middot
    460 words
    1. Organic effluent from discharge of sewage works and farms. Main pollutants are a. Nitrates often a limiting factor, vital for plant growth. Highly soluble and leached from the soil. Sources sewage / manure / inorganic fertiliser. b. Phosphates Often limit plant growth. Fairly insoluble. Main source detergents in sewage. Eutrophication Phosphates and nitrates are often limiting so cause increased growth of water plants such as algae. Once nutrients are used up and light becomes limiting due to...
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  • Bone Loss Vitamin D
    532 words
    Osteoporosis is Osteoporosis Osteoporosis Osteoporosis is a health ailment which causes bones to become so porous that they can break easily. Osteoporosis literally means porous bones. The bones in our skeleton are made of a thick outer shell and a strong inner mesh filled with collagen [protein], calcium salts and other minerals. The inside looks like honeycomb, with blood vessels and bone marrow in the spaces between bone. Osteoporosis occurs when the holes between bone become bigger, making i...
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