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Pollution In Eastern Europe
[ view this term paper ]Words: 2530 | Pages: 10

... real problems are and how and why they were caused. Second, the consequences of these environmental problems on the people and environment of the region. Third, the future prospects of the region: what has to be done and the chances of it happening, and what has been done up to this point to indicate what the future holds. Finally, it should be pointed out at this time that the pollution that is discussed here is only related to pollution that directly harms people and the environment they live in, not pollution like carbon dioxide or greenhouse gases or other factors concerned with the global warming issue. The caus ...




Ebola Virus
[ view this term paper ]Words: 1098 | Pages: 4

... to deal with problems like overpopulation and poverty, we may end up looking back nostalgically on the late twentieth century as a time of health and tranquility. As we show you, in the world of viruses, we are the invaders (Baddorf, Ourworld.compuserve.com)." Between the years of 425BC-430BC Athens' population was dramatically reduced when about 300,00 of its inhabitants died from some sickness. Some people now believe that this great plague was really Ebola. The first recorded outbreak of the Zaire string of the Ebola virus was in Zaire, in 1976. The doctors didn't know how to treat it and that meant t ...




Acid Rain
[ view this term paper ]Words: 1213 | Pages: 5

... as the acids lemon juice and vinegar. Rain which is very acidic can cause damage to trees, lakes, wildlife, buildings, and human health. Some air pollution comes from natural sources, but most is human made. The burning of coal and oil (fossil fuels) by factories, homes, and cars is the main source of chemicals that cause . Power stations emit large amounts of sulfur dioxide and also nitrogen oxides, while car exhaust contains large amounts of nitrogen oxides. Once is formed, it can stay up in the clouds for a long time. These clouds can be carried off by the wind to other areas, sometimes hundreds of mil ...




The Beaver
[ view this term paper ]Words: 883 | Pages: 4

... when is standing on its hind legs, and as a rudder while swimming. The body is plump, the back arched, the neck thick, the hind feet webbed, and all the digits clawed. The fur is usually reddish-brown above and lighter or grayish below. The eyes are small and the nostrils closable. The skull is massive, with marked ridges for fixing the muscles that work the jaws. The two front teeth on either jaw are like those of other rodents, wearing away more rapidly behind so as to leave a sharp, enameled chisel edge. With these can cut down large trees. It usually selects trees 5 to 20 cm (2 to 8 in) in diameter, but it c ...




Introduction To Evolution
[ view this term paper ]Words: 3618 | Pages: 14

... the past through fossil remains or impressions, usually in rock. Changes occur in living organisms that serve to increase their adaptability, for survival and reproduction, in changing environments. Evolution apparently has no built-in direction purpose. A given kind of organism may evolve only when it occurs in a variety of forms differing in hereditary traits, that are passed from parent to offspring. By chance, some varieties prove to be ill adapted to their current environment and thus disappear, whereas others prove to be adaptive, and their numbers increase. The elimination of the unfit, or the "survival of th ...




Describe The Main Limitations Suffered By Those With Chronic
[ view this term paper ]Words: 2779 | Pages: 11

... has difficulty breathing due to widespread narrowing of the airways of the lungs. This narrowing can be caused by a local inflammation of the air-ways, muscle contraction or the production of excess mucus with in bronchi. (R.Roberts, 1996) Most common is bronchial asthma. Medical definitions of asthma suggest that environmental triggers can substantially contribute to the occurrence of an asthma attack. The review of asthma in Victoria (1988) by the Asthma Foundation of Victoria outlined infection, exercise, climatic conditions, exposure to airborne irritants and emotional upsets as the main trigger factors. How ...




Aids 4
[ view this term paper ]Words: 3029 | Pages: 12

... males in this culture in the days before AIDS had an average of 200 to 400 new sexual contacts per year. This figure was much higher than common practice among heterosexual (straight) men or women. In addition, it turned out that rectal sex was a particularly effective way to transmit the disease, and rectal sex is a common practice among gay males. For these reasons, the disease spread in the gay male population of this country immensely more quickly than in other populations. It became to be thought of as a "gay disease". Because the disease is spread primarily by exposure of ones blood to infected blood or semen ...




Dangers And Destructions Of Floods And Hurricanes
[ view this term paper ]Words: 1359 | Pages: 5

... tide is which goes up and down twice a day. When the velocities of hurricane winds become severe the height of the waves become three or more feet higher than the previous high tide. Coastal floods can be caused by a number of things. Coastal floods can be caused by runoff, hurricane waves, tsunami (seismic sea waves), and hurricane rains. Coastal flooding can not only take part on oceans but it can also take part on lakes. Coastal flooding can be 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 ...




Aids Is Becoming So Widespread
[ view this term paper ]Words: 973 | Pages: 4

... the virus to another person whether or not the symptoms are present . Infection with HIV appears to be lifelong in all who become infected. People infected with Hiv eventually develop symptoms that also may be caused by another, less serious conditions. Some symptoms include enlarged lymph glands, tiredness, fever, loss of weight, diarrhea, and night sweats. AIDS is caused by two viruses that belong to a group called retroviruses. The virus became known as HIV-1. In 1985, scientists in France identified another closely related virus that produces AIDS. This such virus became known as HIV-2 and occurs ma ...




Atmosphere Crisis
[ view this term paper ]Words: 646 | Pages: 3

... disastrous results, including drought, coastal flooding and increased species extinction. And, scientists have discovered a hole in the ozone layer. The ozone layer is the only protection for life on Earth against deadly ultraviolet radiation from the sun. Once the ozone layer is completely destroyed, all life on Earth will cease to exist, killed by the deadly radiation. The planet will become a barren rock devoid of all life. Global warming is the predicted result of the greenhouse effect, created by so-called greenhouse gases, such as carbon dioxide and methane, in the atmosphere. The increase in these gases is th ...




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