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Free research essays on topics related to: substances

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  • Mind And Body Existence Of God
    1,140 words
    In the Sixth Meditation, Descartes makes a point that there is a distinction between mind and body. It is in Meditation Two when Descartes believes he has shown the mind to be better known than the body. In Meditation Six, however, he goes on to claim that, as he knows his mind and knows clearly and distinctly that its essence consists purely of thought. Also, that bodies' essences consist purely of extension, and that he can conceive of his mind and body as existing separately. By the power of ...
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  • Genetically Engineered Foods Genetically Modified Crops
    944 words
    JUST as 130 nations were meeting in Montreal recently to forge the first global treaty regulating genetically modified crops, Frito-Lay Inc. was telling its farmers in the United States not to grow genetically engineered corn for use in Doritos chips and other snacks. The problem, the company said, was not a risk to health from the corn but a risk that consumers wouldn't want it. These two events reflect the unease with which genetically engineered foods have been received. Science has reached w...
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  • State Of Consciousness Nrem Sleep
    1,074 words
    Numerous factors determine when and why you feel tired, full of energy, and hungry. A person's state of consciousness and awareness varies throughout the day and depends on a person's activity, environment, and time clock. As a human we have what is called circadian rhythms, which simply explains our daily highs and lows. An example of your basic up and down rhythm would be the sleep / wake cycle. Sunlight regulates the sleep / wake cycle by causing the suprachiasmatic nucleus to decrease its pr...
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  • Atomic Mass Mass Spectrometer
    455 words
    The moles beginning is traced back to the most basic units of matter, atoms. Since atoms are extremely small, scientists have perplexed a great deal over finding a way to measure atomic mass. They struggled to find a universal container that had the capability to mass atoms. Measuring the mass of one atom on a balance in grams is not practical, because the result in grams is an amount too small to be of any use in the laboratory. Fortunately, a new idea came about. If two or more same amounts of...
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  • Grateful Dead Short Term
    1,472 words
    In a house sits a man with no mind. Heart beating, lungs wheezing, mouth agape, and eyes wide open. He is not someone who has a condition; his condition is something chooses, something that is the result of a hallucinogen. Compared to the 60 s and 70 s today's society is able to get stronger forms of hallucinogens. Stronger hallucinogens mean stronger effects. Hallucinogens take a toll on the body and the mind that a person would never think about. That's how they got the name hallucinogen. The ...
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  • Drug Abuse Sports Stars Drugs
    618 words
    Drug abuse affects all of us in our daily lives. It ruins families and destroys relationships. Teens especially are prone to drug abuse due to immense peer pressure, everyday stress, and depression. Marijuana use is on the rise everywhere, and with marijuana comes the harder drugs, making drug abuse an important and critical issue in the world today. There are many issues on different drugs but one sticks in our mind, marijuana. The push for legalization of marijuana has increased over the years...
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  • Sodium Hydroxide Petri Dish
    1,559 words
    Detection of Biological Molecules Introduction: Without carbon, nitrogen, hydrogen, sulfur, oxygen and phosphorus, life wouldnt exist. These are the most abundant elements in living organisms. These elements are held together by covalent bonds, ionic bonds, hydrogen bonds, and disulfide bonds. Covalent bonds are especially strong, thus, are present in monomers, the building blocks of life. These monomers combine to make polymers, which is a long chain of monomers strung together. Biological mole...
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  • Drugs And Alcohol Alcohol And Drugs
    716 words
    Drugs and Alcohol are a major problem on college campuses all over the world. Many college students participate in drugs and alcohol on a weekly basis and even daily basis. What goes through their heads when they participate in these substances? Why do they choose to take part in substance abuse? Is it because they want to get away from reality or is it just because it is the thing to do? Could it have to do with the way a person is brought up? Students have high levels of stress and anxiety dea...
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  • Legalization Of Drugs Consequential Ist
    921 words
    Should Drugs Be Legalized? For several decades drugs have been one of the major problems of society. There have been escalating costs spent on the war against drugs and countless dollars spent on rehabilitation, but the problem still exists. Not only has the drug problem increased but drug related problems are on the rise. Drug abuse is a killer in our country. Some are born addicts while others become users. The result of drug abuse is thousands of addicts in denial. The good news is the United...
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  • Amount Of Light Light Energy
    1,103 words
    Effects Of Depth And Sediment Concentration On Effects Of Depth And Sediment Concentration On The Penetration Of Photosynthetically Effects of Depth and Sediment Concentration on the Penetration of Photosynthetically Active Radiation in Water Introduction The purpose of this study plan is to measure the effects of light on sedimentary particles in water. This study plan will include information pertaining to equipment, procedures, and analysis. This plan will also discuss problems that could ari...
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  • Atomic Mass Energy Level
    283 words
    What is an element: Simple substances that can not be broken down into simpler substances. What is an atom: smallest part of an element that can be identified as an element. How do you right a chemical symbol: If it is one letter capitalize it, if there are two letters capitalize the first letter but not the second. Malleable- metals that can be hammered into thin sheets like aluminum foil. Ductile- metals that can be drawn into wire. Luster- shine Brittle-breaks easily Who stated the atomic the...
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  • Digestive Enzymes Kinetic Energy
    788 words
    Introduction Enzymes are Enzymes Enzymes Essay Introduction Enzymes are the sparks that start the essential chemical reactions our bodies need to live. They are necessary for digesting food, for stimulating the brain, for providing cellular energy, and for repairing all tissues, organs, and cells. There are three types of enzymes: metabolic enzymes, digestive enzymes, and food enzymes. Metabolic enzymes catalyst, or spark, the reactions within the cells. The bodys organs, tissues and cells are r...
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  • Nucleic Acids Amino Acids
    426 words
    In this assesment the student will identify the characteristics and roles of carbohydrates, proteins, lipids, and nucleic acids in a living system. Write a 4 paragraph report describing the atoms in the compound building blocks, types, structure, and function of each. The student must also describe what they would do if they were given a jar with an unknown substance to find out wether or not it contained any of the substances listed above. Proteins: Proteins are long chains of amino acids that ...
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  • Tay Sachs Cystic Fibrosis
    842 words
    Genetic Disorders Genetic Disorders Introduction Genetic Disorders are medical conditions that are caused by an error in a persons genes. Some of them appear as a birth defect, while others do not become distinct until later in life. Genetic disorders can range from those that cause death to those that produce only mild problems, such as color blindness or an extra pinky. Scientists have distinguished more than 9, 000 genetic disorders. Some are exceptionally rare while others are quite common. ...
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  • Philosophy Greek Philosophy Greek Philosophy World
    906 words
    Philosophy, Greek Philosophy Greek Philosophy Philosophy, the use of reason and argument in seeking truth and knowledge of reality. Throughout history man has searched for the origins of his existence, both on an outward and inward level, seeking truth and understanding of his world. The first culture to actively explore this idea of philosophy was the Greeks. Because their civilization placed less emphasis on religion and the masses didnt have to constantly answer to religious figures man had t...
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  • Heroin On The Streets Opium Poppy Drug
    1,287 words
    It was a Heroin Heroin It was a sunny June morning in 1996. Jimmy Chaimberlin walked into Jonathan Melvoin s hotel room. He found him lying unconscious in his bed and rushed to dial 911. Despite his quick reaction, when the paramedics arrived, they pronounced Melvoin dead at 4: 00 a. m. on June 20, 1996. This is just one of the many fatalities that heroin causes every year and it could happen to you. In fact, heroin controls the lives of over 70, 000 people in the US alone. Heroin is three times...
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  • National Institute On Drug Abuse War On Drugs
    2,858 words
    Legalization of Drugs Such an issue stirs up moral and religious beliefs; beliefs that are contrary to what America should believe. However, such a debate has been apparent in the American marketplace of ideas before with the prohibition of alcohol in the 1920 s. With the illegality of alcohol the mafia could produce liquor and therefore had considerable control over those who wanted their substance and service. The role that the mafia played in the 1920 s has transformed into the corner drug de...
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  • Back In Time Final Cause
    1,181 words
    The Monadology attempts to define the ultimate substance of the world. The first part of The Monadology explains what a monad is, whereas, the second part of The Monadology concentrates on metaphysical principles. All that there is in the universe consists of monads, which there are an infinite number of them. A monad is a simple, indivisible substance. It can also be thought of as the true atom of nature, in brief, the elements of things (Leibniz, 1714: 285). Whatever, is, was and will be true ...
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  • Books New York Stratospheric Ozone
    1,223 words
    Chloroflourocarbons were discovered in the 1920 s by Thomas Midgley, an organic chemist at General Motors Corporation. He was looking for inert, non-toxic, non-flammable compounds with low boiling points that could be used as refrigerants. He found what he was looking for in the form of two compounds: dichlorodifluoromethane (CFC- 12) and trichloromonoflouromethane (CFC- 11). In both compounds, different amounts of chlorine and fluorine are combined with methane, which is a combination of carbon...
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  • Rachel Carson Wrote Rachel Carson Book Ddt
    936 words
    Rachel Louise Carson (1907 - 64), was an American marine biologist, and author of widely read books on ecological themes. Carson was born in Springdale, Pennsylvania, and educated at the former Pennsylvania College for Women and Johns Hopkins University. Rachel Carson taught Zoology at the University of Maryland from 1931 to 1936. She was an aquatic biologist at the U. S. Bureau of Fisheries and its successor, the Fish and Wildlife Service, from 1936 to 1952. Rachel Carson wrote 4 books includin...
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243 results found, view free essays on page:

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