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Free research papers and essays on topics related to: toxic substances

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  • Acid Precipitation - 663 words
    Acid Precipitation Acid Precipitation Our atmosphere functions as living ecosystem of chemical reactions. Through the help of the water cycle, chemicals pass through the atmosphere and are eventually taken up by the soil, surface water, or organic materials. Human beings have added enormously to the atmospheric burden of many toxic substances. The most prominent evidence of this is the presence of acid rain: precipitation and particles that have been made acidic by air pollution. Acid rain is a direct consequence of the atmosphere's self-cleansing process. The tiny droplets of water that make up clouds continuously capture suspended particles and soluble trace gases. Not all trace gases can ...
    Related: acid, acid rain, precipitation, air pollution, power plants
  • Air Pollution - 1,546 words
    Air Pollution Air Pollution is addition of harmful substances to the atmosphere resulting in damage to the environment, human health, and quality of life. One of many forms of pollution, air pollution occurs inside homes, schools, and offices; in cities; across continents; and even globally. Air pollution makes people sick, it causes breathing problems and promotes cancer, and it harms plants, animals, and the ecosystems in which they live. Some air pollutants return to earth in the form of acid rain and snow, which corrode statues and buildings, damage crops and forests, and make lakes and streams unsuitable for fish and other plant and animal life. Pollution is changing the earth's atmosph ...
    Related: air pollution, pollution, greenhouse gases, global scale, burn
  • Air Pollution - 1,493 words
    ... ures have in fact been rising, and the years from 1987 to 1997 were the warmest ten years on record. Most scientists are reluctant to say that global warming has actually begun because climate naturally varies from year to year and decade to decade, and it takes many years of records to be sure of a fundamental change. There is little disagreement, though, that global warming is on its way. Global warming will have different effects in different regions. A warmed world is expected to have more extreme weather, with more rain during wet periods, longer droughts, and more powerful storms. Although the effects of future climate change are unknown, some predict that exaggerated weather condi ...
    Related: air pollution, pollution, pollution control, lung disease, more effective
  • Andrew Wedman - 462 words
    Andrew Wedman 12-17-98 Period 2 Tobacco Essay One may think they have benefits from smoking because they fit in the crowd. Of course, thats not true. Someone may tell you that if you smoke youll be cool and everyone will like you. Then the crowd that smokes will like you but others may not. Your family may think you are uncool since you smoke. Other friends that you had may start not liking you since they wont want to be around you when you smoke. You might start to rather smoke then be with your friends. These are the unbeneficial things you may get from smoking. If you smoke you will have bad financial problems. Most people smoke about 20 cigarettes a day which is 1 pack. So you smoke 1 pa ...
    Related: andrew, tobacco industry, toxic substances, secondhand smoke, secondhand
  • Chemical Warfare - 1,216 words
    Chemical Warfare Chemical Warfare In this report I will be giving a history of chemical warfare. I will also be showing a chart that includes the Agent, and many other useful information about nerve gas agents which are the main item for chemical warfare. This report will also include the effects of nerve gas on the human body. Chemical Warfare is an extremely dangerous form of warfare. An inquisitive scientist accidentally stumbled upon the engineering of nerve gas agents in the 30s by the name of Gerhard Schrader. He was working on a solution to the troublesome insects in Germany when he stumbled onto a solution for a larger problemhumans. With World War II less than a decade later the Ger ...
    Related: chemical engineering, chemical warfare, chemical weapons, warfare, human body
  • Childhood Education And Social Inequalities - 1,136 words
    Childhood Education And Social Inequalities Early Childhood Development and Social Inequalities By All families should have the same opportunities to live a descent life. But due to the backgrounds of some families, and children, they may not have a chance for this. There are certain risk factors that have a bearing on social inequalities in health, and particularly those that are prone to preventative intervention. There are many that I could talk about, but I have picked out four of these factors to talk about. They are biological factors, family and social factors, parenting factors, and attachment. Even these I feel that I will not be able to cover completely, because there is only a cer ...
    Related: childhood development, childhood education, early childhood, social class, social development, social factors, social inequality
  • Dredging The Hudson River - 1,928 words
    Dredging The Hudson River For the past year, the subject of polychlorinated biphenyls in the Hudson River and what should be done about them has been discussed by politicians and residents all over the capital region. Often the top story on the local news, the front page headline of the newspaper, the subject of a special on television, or the reason for a town meeting, dredging has become a much debated topic. With all the information being exchanged and opinions published, it is easy for the average person to become confused. In an attempt to make things clear, the following report defines dredging, PCBs, and presents a short discussion of each side of the Hudson River dredging debate. POL ...
    Related: dredging, hudson, hudson river, water treatment, problems associated
  • Economic Perspectives On The Internet - 2,213 words
    ... ials. The Department of Commerce's Office of Antiboycott Compliance (OAC) administers the program through ongoing investigations of corporate activities. OAC operates an automated boycott-reporting system providing statistical and enforcement data to Congress and to the public, issuing interpretations of the regulations for the affected public, and offering nonbinding informal guidance to the private sector on specific compliance concerns. U.S. firms with questions about complying with antiboycott regulations should call OAC at 202-482-2381 or write to Office of Antiboycott Compliance, Bureau of Export Administration, Room 6098, U.S. Department of Commerce, Washington, DC 20230. Antitrus ...
    Related: economic cooperation, economic perspectives, foreign trade, resource conservation, entitled
  • Effects Of Acid Rain On Water - 400 words
    Effects Of Acid Rain On Water Effects of Acid Rain on Water The effects of acid rain are most clearly seen in the aquatic, or water, environments, such as streams, lakes, and marshes. Acid rain flows to streams, lakes, and marshes after falling on forests, fields, buildings, and roads. Acid rain also falls directly on aquatic habitats. Most lakes and streams have a pH between 6 and 8. However, some lakes are naturally acidic even without the effects of acid rain. Lakes and streams become acidic (pH value goes down) when the water itself and its surrounding soil cannot buffer the acid rain enough to neutralize it. In areas like the Northeastern United States where soil buffering is poor, some ...
    Related: acid, acid rain, rain, eastern united states, toxic substances
  • Environmental Hazards Which Effect Pregnacy - 1,063 words
    Environmental Hazards Which Effect Pregnacy Environmental Hazards That Effect Pregnancy Did you know that 30 to 80 percent of all conceptions end in miscarriages, stillbirth or early infant death? And that mens sperm counts have gone down by 40 percent during the last thirty years? There are many reasons that these things happen. Most of these factors to a healthy birth have to do with the environment. Some examples include radiation, viruses, drugs and chemicals. These are the cause of 5 to 11 percent to birth defects and can cause miscarriages. Toxic substances come in many forms. You should know the different forms to look out for. There are hazardous vapors such as the fumes that come fr ...
    Related: environmental, environmental hazards, different forms, reproductive system, bigger
  • Enzymes - 783 words
    Enzymes 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 catalyse, or spark, the reactions within the cells. The body's organs, tissues and cells are run by metabolic enzymes. Without them our bodies would not work. Among their chores are helping to turn phosphorus into bone, attaching iron to our red blood cells, healing wounds, thinking, and making a heart beat. Digestive enzymes break down foods, ...
    Related: blood cells, chemical warfare, warfare agents, leaf, stimulating
  • Group 1 - 1,781 words
    ... ms can not be solved solely by Group 1 4 private actions. Not to be said that individuals cannot do anything to help the environment, especially in local communities, but that there are definitely power in numbers. The EPA programs cover many areas for the welfare of this country. Things such as protecting our water supply, air supply, supervising hazardous waste sites, testing toxic chemicals, and regulating pesticides that can enter our food storage. Before any pesticides or toxic chemical is sold in the United States, the EPA must approve the safety of the product, and set a limit to the amount that is allowed to be in the food that we consume. A chemical manufacturer devotes an avera ...
    Related: food and drug administration, genetic disease, federal food, dropping, sprays
  • Hazardous Waste Research - 2,660 words
    Hazardous Waste Research 08 IN THE INTERNATIONAL COURT OF JUSTICE AT PEACE PALACE, THE HAGUE THE NETHERLANDS 1999 GENERAL LIST NO. 104 KINGDOM OF AUGUSTINE, APPLICANT V. REPUBLIC OF VINOY,RESPONDENT MEMORIAL FOR APPLICANT 1999 International Environmental Moot Court Competition TABLE OF CONTENTS INDEX OF AUTHORITIES....................................... .................................................. .......................x STATEMENT OF JURISDICTION...................................... .................................................. .........viii QUESTION PRESENTED......................................... .................................................. ......................ix STATEMENT ...
    Related: hazardous, hazardous waste, waste, international environmental, human environment
  • Human Body - 1,516 words
    Human Body In the Beginning Within a month of conception, the cluster of cells that will, in the course of time, become a human being begins throbbing, signaling the development of a primitive heart. Scarcely four weeks more pass before an intricate network of veins and arteries the size of a pea forms and subdivides into a tiny replica of the four chambers that will one day make up the adult heart. As the fetus grows, so does its vitally important circulatory system. Although most of the functions of the heart remain dependent upon the mother throughout the entire pregnancy, in the latter stages the organ becomes strong enough to beat on its own. Even so, until birth the baby is cared for a ...
    Related: body weight, human body, high cholesterol, heart association, excess
  • Intelligence: Genetic And Environmental Factors - 1,957 words
    ... ay not be passed down because they are broken up at meiosis and a new genotype is formed at conception. One of the consequences of the Human Genome Project, tasked with sequencing the entire human complement of DNA, is a public perception that scientists are developing a molecular understanding of the human condition. Seldom a month goes by without a media article trumpeting a new genetic link to a behavior or disease. Everything from schizophrenia to television watching is postulated to be linked to genetics, yet scientists are a long way from being able to explain the ramifications of the human genome sequence. Kaye (1992) suggests that phrasing used by the media such as gene for alcoh ...
    Related: biological factors, cultural factors, environmental, environmental factors, environmental influences, genetic
  • Marine Biology - 445 words
    Marine Biology Aquarium Assignment A major source of coastal pollutants, human sewage fouls bays and beaches with both toxic and nontoxic pollutants. Although billions of dollars have been invested in sewage treatment plants to treat wastewater, new and growing coastal communities have increased the amount of discharge into oceans and estuaries. The United States Office of Technology Assessment has identified thirteen hundred major industries and six hundred municipal wastewater treatment plants that discharge into coastal waters of the United States. Many toxic substances enter the sea through the sewer systems, but others originate as industrial discharges. For many toxic substances, we do ...
    Related: biology, marine, marine biology, marine life, united states office
  • Ocean Pollution - 538 words
    Ocean Pollution Pollution in our oceans is a serious problem. According to Marie Wild in her article Ocean Pollution, Ocean pollution is one of the major killers of our sea animals.. Most of the waste that is dumped is plastic, which takes hundreds of years to break down (Oceanic Research Foundation [ORF]). Everyday millions of animals are caught in fishing nets and six pack beer rings. It is thought that only fish are affected from getting caught in these. In reality they also kill birds, turtles, dolphins and seals. The animals are slowly strangled or suffocated by the rings as well as cans, fishing line, nets, kite strings and ropes (Wild). Or, as stated be the National Wildlife Federatio ...
    Related: air pollution, ocean, pollution, research foundation, environment canada
  • Pollution In Europe - 1,104 words
    Pollution In Europe Water Pollution in Europe Table of Contents Pages 1 Introduction Pros/Cons 2 European/Citizens Europe's Proposal For Good waters by 2010 3. Europe's Surface Water Europe's Ground Water 4. The Water Frame Work Directive Penalties Waste Advice 5. Solutions to save Europe Waterways Conclusion 6. Bibliography Introduction Water pollution is a problem that effects all living things. Every living organism on earth requires water to survive. When the water is polluted, it not only effects the plants, insects, and animals, it harms people. Taking care of this planet's water is vital to the short term and long term survival of the living things that inhabit the earth. The oceans, ...
    Related: pollution, water pollution, drinking water, ground water, demanding
  • Proteins Made From Ribosomes Attached To The Rough Endoplasmic Reticulum Enter The Lumen Of The Er And Move To The Smooth End - 860 words
    Proteins made from ribosomes attached to the rough endoplasmic reticulum enter the lumen of the ER and move to the smooth endoplasmic reticulum. A small vacuole (vesicle) pinches off the smooth ER and carries the protein to the Golgi apparatus, where it is further processed. -------------------------------------------------- ----------- Mitochondria are bounded by a double membrane. The inner membrane is folded to form little shelves, called cristae, which project into the matrix, an inner space filled with a gel-like fluid. -------------------------------------------------- ------------ A vacuole is a large membrane-enclosed sac that usually functions as a storage area. Plant vacuoles contain ...
    Related: protein synthesis, rough, smooth, animal cells, toxic substances
  • Pulling The Plug On Mother Earth - 1,036 words
    ... " as Morgensen and Eisenstodt recommend, who is to ensure that these policies and procedures are adhered to ? Morgensen and Eisenstodt must also overcome an additional hurdle - convincing the government that its programs are as ineffective as they say. The governments environmental programs are working well, according to EPA administrator William K. Reilly in "The Green Thumb of Capitalism: The Environmental Benefits of Sustainable Growth." Solid governmental programs have been developed for the improvement of the environment, indicates Reilly; several situations quantify its success. According to Reilly, the government is creating adequate market incentives to curb pollution, encourage ...
    Related: mother earth, plug, pulling, economic growth, common sense
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