Down Syndrome What is Down Syndrome? Where does it come from? Is there a cure? About one in every 800 American babies is born with Down syndrome‚ and it is estimated that about 350‚000 people in the United States‚ and just under 6 million people worldwide live with this condition today. There is a false impression that pregnancy screening has eliminated or substantially reduced the incidence of Down syndrome in the population. Despite years of screening‚ the Down syndrome population in the
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The causes of water pollution Water pollution comes from a myriad of sources‚ both natural and from human activity. The most destructive causes of water pollution are man made‚ however. The largest sources include: The burning of coal in power plants emits ash particulates that contain toxic metals like arsenic and lead. Coal and petroleum also contain sulfur compounds. Combustion generates sulfur dioxide‚ a toxic gas‚ and oxides of nitrogen. When emitted from exhaust stacks‚ these two compounds
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packaging‚ automobiles‚ electronics‚ aircrafts‚ medical supplies‚ and recreational items. The list could go on and on and it is obvious that much of what we have today would not be possible without plastics. Introdution of plastic pollution Plastic is one of the few new chemical materials which pose environmental problem. Polyethylene‚ polyvinyl chloride‚ polystyrene is largely used in the manufacture of plastics. Synthetic polymers are easily molded into complex shapes‚ have high chemical resistance
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Introduction In China‚ an increasing population and rapid economic growth as well as lax environmental oversight have increased water pollution. Therefore‚ deterioration of drinking water quality continues to be a major problem. Continuous emissions from manufacturing are the largest contributor to lowered drinking quality across the country. China’s major river systems exhibit the scope of the problem. Perhaps 70 percent of their water is so polluted that it has been deemed unsafe for human contact
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Environmental Pollution Samantha Arrieta SCI/256 November 5‚ 2013 Analila Lucero Environmental Pollution As an associate-level environmental scientist‚ many concerns have risen in regards to the environmental‚ climate‚ economical and social consequences. Because of overpopulated cities‚ there have been some negative factors. The focus to address these issues could be in addressing the weaknesses in already existing laws with stronger enforcement. In the following‚ I will present a summary
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Global Warming Is Debatable‚ But Global Pollution Is a Fact When we hear the term global warming we tend to think of the enormous hole in the ozone layer‚ but what it really is the earth’s average measured temperature and why it changes. Scientists explain that green house concentrations‚ solar variation‚ and volcanoes negatively affect our earth. This isn’t including the human aspects in which we are damaging our earth’s atmosphere. There are several reasons why researchers state that humans
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Air pollution Air pollution is a problem everywhere in the world. Local air pollution usually affects big cities. Air pollution becomes a worldwide problem when local pollution moves away from where it came from. For example‚ winds carry air pollution made in the middle of the western part of the United States to Canada‚ like acid precipitation. Acid precipitation Acid precipitation is precipitation‚ like rain‚ sleet‚ or snow‚ that contains acids from air pollution. When fossil fuels are burned
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Membrane Transport Christopher Gaita‚ Deija Williams‚ Elisabeth Johnston & Megan Lade University of Phoenix (Online Campus) Amy Sullivan Introduction: Membrane Transport • What is membrane transport • Types – – – – Diffusion Osmosis Active Transport Endocytosis/Exocytosis Photo Courtesy Of: http://hyperphysics.phy-astr.gsu.edu/hbase/biology/celmem.html Osmosis • Example: A semipermeable membrane bag containing a 30% sugar solution is placed in a beaker of pure water. – Diffusion or osmosis
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Water pollution has become increasingly troubling in the last few decades. Even though many new laws have been enacted to try to protect the water sources there is still much work to be done to keep the water systems of the world clean and pollution free. One way that information can be spread about the problems regarding water pollution is by writing water pollution articles. Water pollution articles are very helpful ways to get out information about the causes of water pollution as well as the
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Introduction The formation of a nation’s transportation system‚ historically‚ has been evolutionary‚ not the result of a grand plan. 10/25/2011 developing in small increments that accumulate to bring about significant change a method of doing something that is worked out in advance 1 Transportation Planning -- Introduction The system now in place is the product of many individual decisions to build or improve its various parts‚ such as bridges‚ highways‚ tunnels
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