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4,602 Essays on Science. Documents 4,561 - 4,590

  • Why Iran Needs Nuclear Power

    Why Iran Needs Nuclear Power

    Many disturbing words are written about Ahmadinejad, Iran’s leader. That he believes the next Imam is coming. That a child who was thrown down a well will rise again. That he denies the holocaust. That he supports the cause of the working class in Iran. That he wants his country to have nuclear power. But let's not be hasty about his beliefs. America has a leader who believes that a man who was nailed to

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    Essay Length: 583 Words / 3 Pages
    Submitted: February 14, 2010 By: Monika
  • Why Is Altruistic Behaviour Problematic for the Theory of Natural Selection?

    Why Is Altruistic Behaviour Problematic for the Theory of Natural Selection?

    Nice guys finish first, a chapter title in R. Dawkins’ revolutionary popular science book the Selfish Gene. Although true altruism can not exist according to the classical theory of natural selection if such an evolutionary protagonist as RD has time for it, then there must be a good reason. In fact, we see much behaviour in nature that appears altruistic: alarm calling, guarding, defence and foraging by non-reproductives and grooming are just a few examples.

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    Essay Length: 1,757 Words / 8 Pages
    Submitted: March 21, 2010 By: Kevin
  • Why Is Sex Fun?

    Why Is Sex Fun?

    WHY IS SEX FUN? If you were a male would you rather have a beautiful, impressive, long tail that attracts a lot of women or would you rather have a shorter, less attractive tail that enables you to escape from predators more easily? Living out in the wild among many potential predators, a shorter tail would seem more logical since it would be a more useful trait than a good-looking one. Though the most logical

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    Essay Length: 2,862 Words / 12 Pages
    Submitted: January 10, 2010 By: Top
  • Why Moon Has Phases - Bad Paper

    Why Moon Has Phases - Bad Paper

    Over a 30 day period, I observed and recorded data concerning the moon, and I found that it varies in shape, color and the direction it can be found. Some people may have the impression that the moon grows and shrinks, or they may just have never realized that our moon is lit by the sun. As our moon revolves around us, it goes through phases depending on which side of it receives light from

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    Essay Length: 317 Words / 2 Pages
    Submitted: November 21, 2009 By: Fatih
  • Why People Live in Tectonic Zones?

    Why People Live in Tectonic Zones?

    For millions of years people have lived in areas where two different plates meet. In theses types of areas it is very common for earthquakes to happen and for volcanoes to form. So why if these are such dangerous places to live do people continue to settle here? One reason may be that people believe that the types of natural disasters that are possible will never affect them in their lifetime. It is impossible to

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    Essay Length: 275 Words / 2 Pages
    Submitted: June 6, 2010 By: Jon
  • Why Periodontal Disease Should Be a Concern to All

    Why Periodontal Disease Should Be a Concern to All

    Brodoski 1 Laura Brodoski English 102 Ms. Vatcher, MA 1 October 2002 Why Periodontal Disease Should be a Concern to All. Periodontal disease is more commonly known as gum disease or gingivitis. This infection is serious enough, that it can lead to tooth loss if left untreated. This chronic infection starts around the tooth and it affects the supporting bone and gums. Periodontal disease can affect anywhere from one tooth to all thirty-two teeth. The

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    Essay Length: 1,203 Words / 5 Pages
    Submitted: December 12, 2009 By: Mike
  • Why Some Bacteria Are Becoming Antibiotic Resistant

    Why Some Bacteria Are Becoming Antibiotic Resistant

    Almost 60 years ago the first antibiotics were developed, and they were created at a time when previously untreatable infections such as tuberculosis, gonorrhea, and syphilis could be almost miraculously cured. Infections like these could be a death sentence, and until recently they many be just that again. Microbes are learning the ability to fight of these antibiotics and become resistant to them. They are gaining resistance through a number of different ways, and science

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    Essay Length: 2,006 Words / 9 Pages
    Submitted: December 25, 2009 By: Mike
  • Why the Sea Is Salt

    Why the Sea Is Salt

    Why is the sea salt? One theory states that the sea is salt because of the “mid-Ocean” rift. Fresh basalt flows up through the rift along with “juvenile water; water that is made up of many of the components of sea water including chlorine, bromine, iodine, and many other molecules. Also some salts get into the ocean through volcanoes and even fresh water rivers carries salt into the sea. The sea is composed of many

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    Essay Length: 382 Words / 2 Pages
    Submitted: November 15, 2009 By: Kevin
  • Wilderness

    Wilderness

    Cory Graham Wilderness, from A Sand County Almanac by Aldo Leopold GEOG 111 Section 004 December 2, 2005 In this chapter titled “Wilderness,” the author is discussing how man has tampered with what was originally created by Mr. Almighty, named wilderness. He is also discussing issues surrounding the preservation, adversaries, exhaustion, and the breaking down of wilderness for the transportation and industrialization of today’s society. The author mentioned how some certain values of wilderness should

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    Essay Length: 1,480 Words / 6 Pages
    Submitted: March 14, 2010 By: Anna
  • Wildlife Refuges

    Wildlife Refuges

    Are refuges in Trouble? There are 542 refuges in the U.S. comprising 95 million acres of protected land. Individual refuges serve as a multitude of purposes, including protecting endangered plants and animals and their habitats, preserving wilderness areas, providing outdoor recreational and educational opportunities, and providing lands and waters for traditional uses such as hunting and fishing. One would think that from the overall ownership of land and wonderful activities that the refuges provide, animals

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    Essay Length: 1,586 Words / 7 Pages
    Submitted: December 19, 2009 By: Janna
  • Will the Seeds Change Colors If the Water Has Blue Dye in It?

    Will the Seeds Change Colors If the Water Has Blue Dye in It?

    Question: Will the seeds change colors if the water has blue dye in it? Introduction Fast Plants (brassica) are members of the crucifer family of plants, closely related to cabbage, turnips, broccoli and other cruciferous vegetables. They were bred for over 30 years at the University of Wisconsin. The entire life cycle for Fast Plants® is extremely short, and under ideal growing conditions of continuous light, water, and nutrition, plants will produce harvestable seeds approximately

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    Essay Length: 569 Words / 3 Pages
    Submitted: November 29, 2009 By: Tommy
  • Wimax

    Wimax

    Wi-Fi Glossary Find a Wi-Fi Term Wi-Fi® is a registered certification mark of the Wi-Fi Alliance internet.commerce Be a Commerce Partner Education Online Memory Giveaways Mortgage Refinance Compare Products Computer Parts Corporate Gifts Web Programming Cell Phone Plans Prepaid Calling Cards Mortgage Refinancing PDA Phones & Cases Phone Systems internet.com Developer Downloads International Internet Lists Internet News Internet Resources IT Linux/Open Source Personal Technology Small Business Windows Technology xSP Resources Search internet.com Advertise Corporate

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    Essay Length: 1,005 Words / 5 Pages
    Submitted: March 4, 2010 By: Tommy
  • Wing Pattern Evolution and the Origins of Mimicry of North American Admirals

    Wing Pattern Evolution and the Origins of Mimicry of North American Admirals

    Admiral butterflies (genus Limenitis) are a particularly appealing system to address questions regarding wing pattern evolution and speciation. This genus is unusual among other butterflies in that mimicry has evolved multiple times and hybridization is frequent between wing pattern forms. An interesting fact of wing pattern evolution within this genus is the apparent differences between the largely stereotypic Paleartic fauna and the highly variable Nearctic forms of butterflies. Palearctic and Nearctic forms regard to different

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    Essay Length: 1,802 Words / 8 Pages
    Submitted: December 20, 2009 By: Yan
  • Winning the War on Cancer

    Winning the War on Cancer

    Jasmine Garcia Professor Petkovic English 101 Rough Draft Winning the war on Cancer Scientists are creating entirely new immune-therapies by modifying the genes of viruses, old diseases that are effectively being turned into the equivalent of guided missiles of cancer destruction. Generations of doctors have treated their cancer patients with surgery, radiation, and chemotherapy in hopes that they could slow or reverse cancer growth before the therapies’ would kill their patients. Dr. Carl June, Dr.

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    Essay Length: 1,214 Words / 5 Pages
    Submitted: May 23, 2016 By: jasmine Garcia
  • Wireless Communications

    Wireless Communications

    Wireless Communications Wireless communications are everywhere. People around the world regularly send and receive messages wirelessly, that is, transmitted through the air. Three types of wireless communications include wireless messaging services, wireless Internet access points, and global positioning systems. People use mobile phones, PDAs, and other mobile devices to access text messaging, instant messaging, and picture messaging services (Davies 34-42). Through text messaging services, users send and receive short text messages, which usually consist of

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    Essay Length: 333 Words / 2 Pages
    Submitted: November 15, 2009 By: Max
  • Wonderful World of Satellites

    Wonderful World of Satellites

    Satellites affect our lives every day, and we often don’t even realize it. They make our lives safer, more convenient, and provide entertainment. Here are some of the jobs satellites do. Television Satellites send television signals directly to homes, but they also are the backbone of cable and network TV. These satellites send signals from a central station that generates programming to smaller stations that send the signals locally via cables or the airwaves. “At

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    Essay Length: 763 Words / 4 Pages
    Submitted: February 15, 2010 By: Mike
  • Work

    Work

    In High School I took several art classes. The last one I took, my senior year, probably left the biggest impression on me. Not because of what the teacher gave me, but because of what I gave myself. My teacher’s name was Mrs. Lerose, from now on Mrs. L as we used to call her, or at least what we called her behind her back and when we were feeling brave (she didn’t like that

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    Essay Length: 1,135 Words / 5 Pages
    Submitted: January 15, 2010 By: Max
  • Workplace Safety, Patient Safety and Health Care Employment Issues

    Workplace Safety, Patient Safety and Health Care Employment Issues

    There is risk for employees who provide dialysis care to patients, as there is in any other healthcare setting. The employees may be exposed to falls, back injuries from lifting heavy patients, infectious diseases, and sharps. These potential injuries can result in lost employee time, and also in costly worker's compensation settlements, so it is vital to establish written guidelines for staff to prevent basic safety pitfalls that can crop up every day. Keeping

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    Essay Length: 890 Words / 4 Pages
    Submitted: May 2, 2011 By: PauletteGagnon38
  • Workplace Safety, Patient Safety and Health Care Employment Issues

    Workplace Safety, Patient Safety and Health Care Employment Issues

    There is risk for employees who provide dialysis care to patients, as there is in any other healthcare setting. The employees may be exposed to falls, back injuries from lifting heavy patients, infectious diseases, and sharps. These potential injuries can result in lost employee time, and also in costly worker's compensation settlements, so it is vital to establish written guidelines for staff to prevent basic safety pitfalls that can crop up every day. Keeping

    Rating:
    Essay Length: 890 Words / 4 Pages
    Submitted: May 2, 2011 By:
  • World Genetic Disease Project - Severe Combined Immunodeficiency

    World Genetic Disease Project - Severe Combined Immunodeficiency

    World Genetic Disease Project- Severe Combined Immunodeficiency Severe Combined Immunodeficiency (SCID) or more commonly known as the bubble boy disease can cause newborns to have a weak or no immune system. It causes them to get infectious diseases that can kill them but if treated and diagnosed soon enough it can go away. A magority of the people that have SCID are treated for an X-linked SCID which can be responsible for about 45% of

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    Essay Length: 902 Words / 4 Pages
    Submitted: May 18, 2017 By: Daisy Benitez
  • Worms

    Worms

    Worms Earthworm Dissection Purpose: Earthworms, also known as night crawlers are in the phylum Annelida. To learn more about an earthworm, and its external and internal anatomy, would be to participate in an easy earthworm dissection lab. First, it would be beneficial to know simple facts about an earthworm, such as, there are many known species, and earthworms have a closed circulatory system, and can range in size. Earthworms are helpful when it comes to

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    Essay Length: 409 Words / 2 Pages
    Submitted: December 17, 2008 By: Mikki
  • Wound Vac

    Wound Vac

    Clinical Journal Today, I made rounds with Angela Box, the hospitals certified wound and ostomy nurse. While she also takes care of wounds and ostomies, she also makes rounds for the anthesiologists on their PCA pumps and starts PICC lines. The most interesting thing I saw was a man who had a large abdominal wound and was being treated with a wound vac. He had acquired this wound as a result of and abscess caused

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    Essay Length: 1,108 Words / 5 Pages
    Submitted: April 4, 2010 By: Jon
  • Written Instructions

    Written Instructions

    The objective of this experiment is to determine the increase in hardness of an engineering material as a function of the amount of cold work (also called strain hardening) imparted onto the material. Cautions: • Do not use your bare fingers to push the specimen through the rolling mill. • Do not use the Rockwell hardness tester until you have received the necessary instructions. Make sure that the bottom of the specimen directly under the

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    Essay Length: 524 Words / 3 Pages
    Submitted: June 8, 2015 By: Will Kadd
  • X-Ray Fundamentals

    X-Ray Fundamentals

    Basic physics of X-ray imaging Carl A Carlsson and Gudrun Alm Carlsson Department of Radiation Physics Faculty of Health Sciences Linköping university Sweden REPORT LiH-RAD-R-008 Second edition 1996 TABLE OF CONTENTS 1. Introduction .........3 2. The physics of the X-ray source: the X-ray tube .........3 3. The energy spectrum of X-rays .........7 4. The interactions of X-rays with matter .........12 5. Contrast .........19 6. Energy absorption of X-rays .........22 7. Stochastics in the X-ray image

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    Essay Length: 4,072 Words / 17 Pages
    Submitted: November 13, 2009 By: Janna
  • Xenadrine

    Xenadrine

    Xenadrine Xenadrine is one of the more popular and controversial dietary supplements on the market today. As you read this paper, you will come to know that there are two different types, Xenadrine RFA-1 and Xenadrine EFX. These two might not seem that different, but they are in a way that your life may depend on it. Xenadrine, made by the New Jersey company Cytodyne Technologies, has quickly grown to be one of the

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    Essay Length: 759 Words / 4 Pages
    Submitted: March 26, 2010 By: Fatih
  • Xeno Transplantation

    Xeno Transplantation

    With approximately 48,000 individuals on the waiting list for organ transplants and only about 4,835 people donating their organs after death each year, there are around 3,000 yearly deaths for those who do not have these organs available to the them (1). Consequently, medicine has turned to an additional yet somewhat controversial source for organ donations: animals. The term xenotransplantation is defined as "the transplantation of living organs, cells or tissue from one species to

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    Essay Length: 1,160 Words / 5 Pages
    Submitted: December 6, 2009 By: July
  • Xyy Syndrome

    Xyy Syndrome

    XYY Syndrome XYY Syndrome is a rare genetic disorder which affects males due to an extra Y chromosome. Healthy males have 46 chromosomes including one X and one Y chromosome. Men with XYY syndrome have 47 chromosomes, two of which are Y chromosomes. It is not known why the extra Y chromosome occurs. The disorder is present at birth and is estimated to occur in one out of every one thousand live births. In very

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    Essay Length: 470 Words / 2 Pages
    Submitted: December 23, 2009 By: Jessica
  • Xyy Syndrome

    Xyy Syndrome

    XYY Syndrome is a rare genetic disorder which affects males due to an extra Y chromosome. Healthy males have 46 chromosomes including one X and one Y chromosome. Men with XYY syndrome have 47 chromosomes, two of which are Y chromosomes. It is not known why the extra Y chromosome occurs. The disorder is present at birth and is estimated to occur in one out of every one thousand live births. In very rare instances,

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    Essay Length: 400 Words / 2 Pages
    Submitted: March 19, 2010 By: Steve
  • Xyy Syndrome

    Xyy Syndrome

    XYY Syndrome is a rare genetic disorder which affects males due to an extra Y chromosome. Healthy males have 46 chromosomes including one X and one Y chromosome. Men with XYY syndrome have 47 chromosomes, two of which are Y chromosomes. It is not known why the extra Y chromosome occurs. The disorder is present at birth and is estimated to occur in one out of every one thousand live births. In very rare instances,

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    Essay Length: 391 Words / 2 Pages
    Submitted: May 23, 2010 By: Steve
  • Yak Lab

    Yak Lab

    Yak Lab Natural selection is the process by which favorable heritable traits become more common in successive generations of a population of reproducing organisms, and unfavorable heritable traits become less common. Natural selection acts on the phenotype, or the observable characteristics of an organism, such that individuals with favorable phenotypes are more likely to survive and reproduce than those with less favorable phenotypes. If all the offspring that organisms can produce were to survive and

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    Essay Length: 612 Words / 3 Pages
    Submitted: January 18, 2010 By: Mike
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