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» Browse Science and Environment Term Papers
Chromosome Probes At The University Of Toronto
Number of Words: 2250 / Number of Pages: 9
... tests using Willard's probes would be much simpler and faster to perform and could be available to all pregnant women who wish to take advantage of the technology. Current prenatal testing involves growing fetal cells in vitro and examining them, over one or two months, to see if there are two copies of a particular chromosome, which is normal, or one or three, which is abnormal. A test using Willard's probes would require only a few cells and a few days to detect abnormalities. "I don't think it's beyond the realm of possibility that these kinds of tests could eventually be done by an obste ...
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The Siberian Tiger
Number of Words: 293 / Number of Pages: 2
... is Panthera and it's species is Tigris Altaica.
The Siberian Tiger is a mobile creature and it lives in northern Asia and
is found as for north as the Arctic Circle. It's territory is more than four
thousand square miles and it will keep that territory indefinitely, as long as
the food supply lasts.
The Siberian Tiger hunts very much but only about one tenth of the hunts
are successful. It requires more than twenty pounds of meat per day. It is
heterotrophic and it's diet consists mainly of deer, boar, bear and fish.
The Siberian Tiger is a solitary animal. Males and females are ...
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Effects Of Smoking
Number of Words: 464 / Number of Pages: 2
... smoke also contains carbon monoxide, the same
poisonous gases released from a car exhaust pipe. Carbon
monoxide is a colorless and odorless, highly toxic gas that
reduces the amount of oxygen that the blood can carry.
Combined with the effects produced by the nicotine, it
creates an imbalance in the demand for oxygen by the cells
and the amount of oxygen the blood is able to supply.
Tar is another chemical produced from cigarette smoke.
Tar contains at least 30 cancer causing irritants. Tar is a
mixture of several substances that condense into a sticky
substance on the lung. Tobacco manuf ...
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Bang, The Life Cycle Begins
Number of Words: 237 / Number of Pages: 1
... dense point concluding the life of the universe. You would think of this as the end, but only an explosion is needed to wake up and give life to a new universe. Therefore, trapped forever in the cycle of rebirth.
As humans we also travel through a cycle of rebirth according to the Hindu religion. We are all trapped on the Wheel of Samsara trying to break free. It is only possible to escape through the laws of Karma. Karma is simply how you act in this life determines what you are after your rebirth. For example, if you live each life being the best Hindu you possible can eventually you ...
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Mechanical Energy
Number of Words: 506 / Number of Pages: 2
... do use our muscles within us, we may not always be sure that heat is given off. Our bodies do not burst into flames but the perspiration on our skin is a clue to what is happening.
The movement of the windsurfer has a different explanation. The windsurfer is propelled along by a sail which collects from the winds that sweep along the water. This energy has been produced by the sun which warms the earth's surface and sets the air above in motion. The sun's heat comes to the earth as a form of radiant energy. When the heat reaches the surface of the earth, it causes the land or seas to rise in te ...
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Causes Of Schizophreniz
Number of Words: 1282 / Number of Pages: 5
... Our current model of the causation of schizophrenia is very similar to that used to understand cancer. That is, schizophrenia probably occurs as a consequence of multiple "hits," which include some combination of inherited genetic factors and external, nongenetic factors that affect the regulation and expression of genes governing brain function or that injure the brain directly. Some people may have a genetic predisposition that requires a convergence of additional factors to produce the expression of the disorder. This convergence results in abnormalities in brain development and maturation, a pr ...
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Birds
Number of Words: 751 / Number of Pages: 3
... over ten feet high.
The evolution of birds is still being argued. Most people believe that
birds evolved from reptiles. Because of birds mainly delicate bones, few fossils
have been left behind for scientists to study. The earliest bird fossils come
from archaeopteryx. The fossils that have been discovered from archaeopteryx
include six partial skeletons and one single feather. Archaeopteryx , unlike
modern birds, had teeth, a reptile like tail, and three claws on each wings.
Scientists think it could fly, but only weakly.
Approximately 85 species and 50 sub species have become extinct in the
last 3 ...
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Cloning
Number of Words: 1792 / Number of Pages: 7
... thereby causing the two cells to fuse together combining their genetic structures.
Cloning / 3
Now that we have established the scientific basis of cloning, let me tell you how cloning can directly benefit humanity. There are many health issues that can be avoided, reversed and cured by the cloning of human cells and body parts. With the aid of cloning
technology, couples that have suffered infertility would be able to have their own biological children. Cloning technology may potentially be used to completely reverse the effects of heart attacks. It is a distinct possi ...
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Cheetah 2
Number of Words: 374 / Number of Pages: 2
... plains of Africa. This is definitely a great place for it to hide based on it’s coat color. It is because of this combination of tall grass and camouflage coat which allows the cheetah to stalk and catch
it’s prey. These usually consist of gazelles, wild boar, or pretty much any
animal it can handle. However, the regular range for it’s food is about 88
pounds. The cheetah then drags the meat to it’s “home”, away from prying animals, and feasts on it immediately.
The cheetah is a very interesting, solitary animal which I have always been interested in and was contented to research and lea ...
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Hot Zone
Number of Words: 1605 / Number of Pages: 6
... the epileptic convulsions that accompany the last stages of death. Their hearts have bled into themselves, heart muscles softened and hemorrhaging , the brain clogged with dead blood cells (sludging of the brain), the liver bulging and yellow with deep cracks and the spleen a single hard blood clot. Babies with bloody noses born with red eyes lay dead from spontaneous abortions of affected mothers. It is the human slate-wiper, the invisible ultimate death, the filovirus named Ebola.
The theme of Richard Preston's seems deal with man's one predator, the invisible one, the one thing that man cann ...
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