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Genetic Engineering

... so that the pesticide manufacturers can make more money on their products. About 70% of genetic engineering falls into this category. A second example is biowarfare. Perhaps some of you saw the recent New Yorker article on the subject [Richard Preston, "Annals of Warfare: the Bioweaponeers." New Yorker, March, 1998]. There is widespread consensus that the information reported in that article is true. One of the things he mentions is that the former Soviet Union had the largest big-warfare program in the world, with 32,000 s ...

Number of words: 1733 | Number of pages: 7

Natural History Of The Lamprey

... Adult forms of lampreys live on the blood of fishes and can sometimes cause serious depredations in fisheries. Their mouths are circular, without jaws and equipped with a piston like tongue that creates suction when the mouth is placed against an object, and the tongue is drawn back. In the inner part of the mouth and the edges of the tongue, there are many small, horny teeth. These are what the lamprey uses to pierce the flesh of fishes. The adult forms of lamprey die soon after spawning and reaching their mature form. Lampreys mo ...

Number of words: 1160 | Number of pages: 5

Encephalitis

... or minor with not many options of treatment. The best treatment for the disease is prevention, which is mostly limited to vaccinations. With vaccinations there are two types of immunization, which are Active and Passive immunization. The difference between the two is that Active immunization is used to control a disease on a long term basis, where Passive immunization is used to treat a disease quickly but only lasts a few weeks. Passive immunization works immediately but does not last where Active immunization takes about t ...

Number of words: 1051 | Number of pages: 4

Clouds

... There is a height classification which are called high, middle, and low altitudes. The different kinds of are found in these three divisions according to the ' altitude. First, we have the high that range in altitude from 16,500 to 45,000 feet. In this division we have the cirrus, cirrocumulus, and cirrostratus . A cirrus cloud appears in delicate, feather-like bands that are not attached to each other, and is usually white with no shading. Cirrocumulus appear like very small round balls or flakes. The cirrocumulus someti ...

Number of words: 478 | Number of pages: 2

Nuclear Weapons And Their Hazards

... ICBM missile. These missiles have multiple warheads that can destroy the entire world in less then 35 minutes. Nuclear war would produced so much smoke that rapid, substantial temperature and rainfall decreases would occur over wide areas of the middle Northern Hemisphere. Smaller temperature decreases might occur in low latitudes but more importantly in these regions rainfall would probably decreases because monsoons could not develop. Like in On The Beach, all the radiation move towards Australia and everyone innocent people died. ...

Number of words: 821 | Number of pages: 3

Causes Of Schizophreniz

... the medical profession and the public. Our understanding of the causation of schizophrenia has increased in the past several decades. Schizophrenia is a disease of the brain that is expressed clinically as a disease of the mind. Both its symptoms and signs and its associated cognitive abnormalities are too diverse to permit its localization in a single region of the brain. The working hypothesis shared by most investigators is that schizophrenia is a disease of neural connectivity caused by multiple factors that affect brain development. (3,4 ...

Number of words: 1282 | Number of pages: 5

Chromium

... States imports almost all its chromite. Chromium is added to other metals to make them harder and more resistant to chemicals. Small quantities mixed with steel make the metal stainless. Stainless steel is used to make cutlery and kitchen equipment because it does not rust easily and takes a mirror-like polish. This steel contains about 13 percent chromium and 0.3 percent carbon. The hardness of steel can be increased by adding small quantities of chromium to it. Chromium steel alloys (mixtures containing one or more metals) are ...

Number of words: 483 | Number of pages: 2

Digestive System

... place in a long tubelike canal called the alimentary canal, or the digestive tract. There is good reason why the passageway used by food to travel through the body is called the alimentary canal. Just as canals are constructed to guide ships through waterways to their destinations, the alimentary canal guides food as it travels through the human body. The whole canal is lined with a mucous membrane. Digestion begins in the mouth. Here the food is cut and chopped by the teeth. The tongue helps mix the food particles with a digestive juice c ...

Number of words: 1451 | Number of pages: 6

Cells

... is always regulated by the cell, a cell recives the maximum speed in which intercellular communications will take place while providing the ideal conditions for diffusion: Movement of molecules from a region of higher concentration to a region of lower concentration, a vital function in the life of a cell. Like wise, the surface area and volume of a cell are directly influential in the efficiency of the cell’s nutrient absorption and waste expulsion processes. Since the cell membrane of an eukaryotic cell is its only source of nutrition, ...

Number of words: 333 | Number of pages: 2

Ebola Virus

... " … Keep in mind the role that humans play in the spread of these infections. If we don't begin 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 ...

Number of words: 1098 | Number of pages: 4

Arthritis 2

... a strange tissue grows over the surface of the cartilage, and tears occur where tendons are inserted in bone. New planes of motion contrary to normal anatomical planes appear, followed by enzymatic degradation of the tissues. Ligaments become lax, losing their tensile strength. The cartilage that caps the ends of bones, and which is normally four times more slippery than Teflon, loses that slipperiness and becomes perforated by ulcers. Many of the changes that occur in the joints of people with rheumatoid arthritis and osteo-arthritis are ...

Number of words: 867 | Number of pages: 4

Hormone Use In Livestock

... produced protein. PST is popular among farmers because it can do within weeks what it would take several years through genetic breeding programs. Pigs on PST will consume less food and reach market age faster. Good management enhances the effect of PST. Research has made an indication that pigs that have been treated with PST are leaner. Their meet is very similar in color, taste, tenderness, and juiciness to those who have not received PST. As pigs grow closer to market weight, they produce less PST, which results in poor feed efficienc ...

Number of words: 449 | Number of pages: 2

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