... behind the upper eyelid at the outer corner of the eye. After passing over the eye, the liquid from the gland is drained into the nose through the tear duct at the inner corner of the eye. Heavy laughter or crying causes muscles in the upper eyelid to squeeze the lachrymal gland. This produces tears that flow too fast to be drained away. The eyelashes catch many flying particles that otherwise would enter the eye. As further protection, the eyelids automatically close when an object suddenly moves close to the eye. The eye is made of 3 coats, or tunics. The outermost coat consists of the cornea and the sclera. The middle coat contains the main blood supp ...
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... and eye and ear anomalies. [2,4,15,16] Even in the absence of growth retardation or congenital abnormalities, children born to women who drank alcohol excessively during pregnancy appear to be at increased risk for attention deficit disorders with hyperactivity, fine-motor impairment, and clumsiness as well as more subtle delays in motor performance and speech disorders. [4] These findings have been referred to as fetal alcohol effects (FAE). As recently described, FAS and FAE produce profound cognitive, behavioral, and psychosocial problems that persist to date of follow-up of those affected. In the most comprehensive and far-reaching study to date, Streissguth ...
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... is generally used to describe low-thc varieties of cannabis, which are grown for industrial uses. The strength of cannabis varies greatly from one variety to another. Some, known as 'one-hit-shit', requires only a single lung-full to reach full effects while other varieties require many hits to achieve the same effects. Additionally, the amount that one individual likes to smoke can be many times what another prefers. Generally, 1/8 ounce (3.5 g) of mid-quality bud could get around 20-30 people reasonably high. Cannabis is sold on the street for anywhere between $25 - $150 per 1/4 ounce depending on quality and location. In the U.S., prices are generally $3 ...
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... discussing some of these issues, questions, and problems. In the beginning when the solar system was young, the earth was still forming, things were very different. A great mass of elements swirled around a dense core in the middle. As time went on the accumulation elements with similar physical properties into hot bodies caused a slow formation of a crystalline barrier around the denser core. Hot bodies consisting of iron were attracted to the core with greater force because they were more dense. These hot bodies sunk into and became part of the constantly growing core. Less dense elements were pushed towards the surface and began to form the crust. The early cru ...
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... the reduction of lead in gas. DDT is still used in developing countries on the malaria-carrying mosquito. Oil spills also have harmful effects, luckily chemicals can neutralize the oil before massive damage occurs. In 1983 the Dow Chemical Company’s factory, a major producer of chemicals, showed contamination from dioxin. Dow undertook a 3 million dollar study of the material. The company announced that Dioxin is less health and life threatening. High-temperatures are used to reduce the toxicity of waste. These processes use plasma technology to make the waste more environmentally friendly. Plasma treatment reach temperatures up to 1,650o F. In the Uni ...
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... deaths out of the 550 cases. The most recent outbreak is in Kikwit, Zaire. The outbreak appears to have started with a patient who had surgery in Kikwit on April 10, 1995. Members of the patient's surgical team developed symptoms similar to those of a viral hemorrhagic fever disease. The symptoms of Ebola hemorrhagic fever begin 4 to 16 says after infection. Victims develop fever, chills, headaches, muscle aches, and loss of appetite. The patient will suffer vomiting, diarrhea, abdominal pains, soar throat, and chest pain as the virus progresses. The blood fails to clot and patients may bleed from injection sites as well as into the gastrointestinal tract, ...
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... grow unchecked, when we know that even now, the Earth's water supplies are taxed to the limit? The subject of over-population encompasses many areas of study. Some examples are health, food, pollution and fresh water. The underlying link between all of these areas is water. The following four articles reveal that the water supplies that we all depend on are being used at an unsustainable rate. There is not enough fresh water on this planet for current growth rates to continue. The Public Broadcasting Company has posted on the Internet a timeline detailing the Earth's population at different years. According to this Population Timeline, the population in the "year 19 ...
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... in buildings.(5) Outdoor air contains radon, but it is in extremely low concentrations therefore it is not a health hazard. Some wells contain water that has radon dissolved in it. This can be a hazard if the water is agitated or heated, allowing the gas to escape and elevate the levels that are in the building.(6) Health Risk The Surgeon General's office reports that indoor radon gas is a national health problem. This gas causes thousands of deaths every year.(7) These deaths are a result of lung cancer, which is caused by the radioactive particles that make up the gas.(8) The likelihood of getting lung cancer from radon depends on: the concentration tha ...
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... be managed. Managing our trash is the "in thing", yet it is hardly convenient. Lets face the facts, sealed toxins "won't affect us for a good twenty years". Although this may be true, there are still many advantages to waste management. Today, more people are in favour of companies who invest in "green products". As a result, companies have removed phosphates, bleaches, and have made their paper products out of recycled papers. At home, families, are saving things, like leftovers, and making sandwiches for the next day. Industries are also manufacturing most of their christmas cards out of recycled paper, since it takes 20 trees to make a ton of it. Finally, ...
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... studies are consistent with those of the case studies and the hypotheses that the recent technological change has shifted the relative demand for skilled labor to the right. Changes in production techniques have widened across the country quickly, especially the multinational firms. Thus, if technological change is an important determinant of relative demand shifts, one would expect to observe patterns in other industrialized countries similar to those in the United States. Some of the recent studies report results for a variety of old industrialized (OECD) countries that are indeed consistent with the U.S. results (Collechia and Papaconstantinou, 1996; Machin, R ...
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