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» Browse Science and Environment Term Papers
Chemistry Hits The Beach
Number of Words: 998 / Number of Pages: 4
... in the form of wrinkles, blotchy skin and even skin cancer. Sunscreens have evolved a goodly amount over the years. Christopher Columbus noticed in 1492 that the natives of Hispaniola would protect themselves with red paint, as to avoid sun damage. The ancient Greeks, who trained for the Olympics in the nude would rub themselves with a mixture of sand and oil, which provided an opaque protection from the sun, and were sweat resistant. These notions resemble those of earlier modern day technologies. The minerals most often used in conjunction are either oxide of zinc of titanium. These are the sunsc ...
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Theory And Research
Number of Words: 1799 / Number of Pages: 7
... reliability.
News Article Summary
This article entitled "Horatio Alger lives" is basically a survey
correlation study done on two distinct social classes; sons of wealthy fathers
and sons of lower income fathers. The goal in this research was to determine
which sons of the two distinct social groups mentioned, were to likely make more
money in the future. Therefore, they surveyed 400,000 males age 16 and 19 that
was still living with their fathers. After the eleven year period the same
groups of men were again surveyed, and their incomes was correlated with their
fathers. The research revealed ...
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Nucular War
Number of Words: 1384 / Number of Pages: 6
... research. Other types of bombs were developed to tap the energy of light elements, such as hydrogen. In these bombs the source of energy is the fusion process, in which nuclei of the isotopes of hydrogen combine to form a heavier helium nucleus. This weapons research has resulted in the production of bombs that range in power from a fraction of a kiloton to many megatons. The size of the bomb has been made smaller helping the development of nuclear artillery shells and small missiles that can be fired from portable launchers in the field. Nuclear bombs were originally developed as strategic weapon ...
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Adaptation Syndrome
Number of Words: 326 / Number of Pages: 2
... Seyle exposed a large number of rats to a refrigerated room where the temperature was near freezing,(Author pg#) “…during the first 48 hours they developed the typical manifestations of the alarm reaction. This was proved by killing ten animals at the end of the second day; all of them had large fat-free adrenals, small thymuses, and stomach ulcers.” (Seyle, 1956; 88). This experiment conducted illustrated the vast number of physical changes the body undergoes in stressful situations.
The Resistance Stage
The alarm reaction stage cannot be maintained indefinitely, and longer exposure t ...
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Dangers And Destructions Of Floods And Hurricanes
Number of Words: 1359 / Number of Pages: 5
... a
great danger because coast lines are very densely populated areas. In the United
States in the early 1990's 50% of the population was on a coastal county.1
Although they shrink before reaching shore, wind generated waves have been
spotted to be as high as 30 m (100 ft) in the middle of the ocean.2 In 1970 a
major storm in the Bay of Bengal produced heavy seas that flooded regions of
East Pakistan, killing about 200,000 people.3
River flooding can happen a number of ways. The causes are rain,
snowmelt, and ice jams. Soil can not absorb as much water with continuos
moistening. The longer ...
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Nuclear Energy
Number of Words: 1496 / Number of Pages: 6
... power plants and at other facilities all the time. An accident at a nuclear power plant has the potential to be much more harmful than an accident at a coal or gas plant because of the radiation that could be released. An example of this is Three Mile Island in Pennsylvania where there was a partial core meltdown in march of 1979 caused large amounts of radiation to be released into the atmosphere.
Accidents involving US nuclear power plants are very rare. This does not mean that they do not occur. In the early 1980's there was a fire at Yankee Atomic, a nuclear power plant in Massachusetts, d ...
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Alcoholism An Intrepretation
Number of Words: 679 / Number of Pages: 3
... and a sense of well being. After repeated exposure, the brain becomes dependent on this drug to unburden itself whenever it feels the compulsion. Several factors that contribute to alcoholism are the individual’s psychology, genetics, culture, and the individual’s response to physical pain.
In order to understand alcoholism, we must first define what scientists classify alcoholism to be. Moderate drinkers drink equal to at least two drinks a day. An at-risk person for alcoholism will drink more than fourteen drinks a week or four drinks in one sitting. An individual who suffers from alcohol abuse ...
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Management Techniques For The Red-Cockaded Woodpecker On Federal Lands
Number of Words: 2093 / Number of Pages: 8
... Atlantic
coast (Jackson, 1986; Reed et al., 1988). Picoides borealis nest in clans or
family groups that usually consist of one breeding pair and 2 non-breeding male
helpers (Jackson, 1986 ). This group establishes and defends a territory that
includes foraging habitat and nesting "cavity trees" (Copeyon et al., 1991;
Jackson et al., 1986; Rossell and Gorsira, 1996). Red-cockaded woodpecker
clans excavate cavities in living pines, and have established a living and
foraging routine in conjunction with the southeastern pine forests and the
historical occurrence of fire, which reduces hardwood ...
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Disease In Africa
Number of Words: 4745 / Number of Pages: 18
... with many different types of disease within their society due to their type of land, climate and weather. "Among all the diverse natural environments of the earth, tropical rain forests are the most variegated in the sense that more diverse forms of life share this kind of habitat than occupy drier, cooler regions."(McNeill,16) Africa possesses the prefect breeding ground for many diseases. There were many diseases and viruses that have had an impact on Africa, however trypanosomiasis, malaria, yellow fever, AIDS, smallpox, onchocerciasis and yaws were the most destructive.
African trypanosom ...
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Mans Discovery Of Fossil Fuels Could Be His Downfall. Discus
Number of Words: 1624 / Number of Pages: 6
... for fuel and energy. As well as powering steam engines coal became widely used for heating, cooking and industrial processes.
Air pollution during the Industrial revolution was far worse than anything seen today. Apart from the smoke and fumes obscuring visibility, they also caused major health problems to the inhabitants of the industrial areas reducing life expectancies, predominantly with respiratory diseases.
The simultaneous development of the internal combustion engine, well drilling technology and the capacity to refine crude oil into gasoline and other liquid fuels (B. Nebel et al 1995) in th ...
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