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» Science Essays and Papers
Global Warming
<view this essay>.... effects, the majority of the general public does not view as a definite and imminent danger. Robert T. Watson supports this in his comment about society’s failure to recognize the severity of a potential environmental disaster as a result of .
It is important that society treat human-induced as a serious global-scale environmental threat. The overwhelming majority of scientific experts believe human-induced climate change is inevitable. The question is not whether climate will change in response to human activities, but rather where (regional pattern), when (the rate of change) and by how much (magnitude). (17,18).
Alarming information and trends ar .....
Number of words: 2223 | Number of pages: 9 |
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The Origin Of Humanity
<view this essay>.... accurate why can't God control natural disasters on his planet? He is so clever to create everything known to mankind why doesn't he make the perfect world if he had that much control?
There seems to be quite a bit more sustantial evidence on earth to support the theory of evolution. The evidence is holds up more because actual samples of fossils have been collected and scientifically tested using a method called carbon dating to determine the age of the fossils. Which can then be examined and placed along a timeline. The time periods show slight differences in bone structure showing what is hypothesized to be the human evolving. Evolving from what though? Th .....
Number of words: 370 | Number of pages: 2 |
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Gallium
<view this essay>.... lines while examining material seperated from
zinc blende. Soon after he isolated the metal studied its properties, which
coincided those that Dmitrii Ivanovich Mendelev had predicted a few years
earlier for eka-aluminium, the then undiscovered element lying between aluminum
and indium in his periodic table.
Though widely distributed at the Earth's surface, gallium does not occor
free or concentrated in independant minerals, except for gallite. It is
extracted as a by-product from zinc blende, iron pyrites, bauxite, and
germanite.
Silvery white and soft enough to be cut with a knife, gallium takes on a
bluish tinge because of superficial oxidation. .....
Number of words: 487 | Number of pages: 2 |
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Describe The Main Limitations Suffered By Those With Chronic
<view this essay>.... defined.
Asthma is a condition whereby the sufferer 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 .....
Number of words: 2779 | Number of pages: 11 |
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Cloning: Background
<view this essay>.... technique to clone such amphibians as frogs and salamanders as early as the 1950s. In 1996, a group of Scottish scientists used the procedure to clone a sheep. This event marked the first time a mammal had been cloned in this way ("Clone"). The scientist who started cloning is Ian Wilmut (who led the group) (Recer). He cloned Dolly using the nucleus from the cell of its mother, and it had an exact genetic replica of its mother. This spurred arguments about cloning humans (Recer). After Wilmut hinted he may be repeating his experiment to silence the critics (Recer). Wilmut does not have the courage to repeat his experiment, also that the government will never .....
Number of words: 1074 | Number of pages: 4 |
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Dolphins & Humans: Breaking Barriers Of Communication
<view this essay>.... they seem fascinated with it. In this paper it will be proven that dolphins and humans have meaningful and significant communication.
The history of dolphins is at least sixty million years old. It is believed that dolphins evolved from cows. In support of this theory, there are traces of hooves on the fins of dolphin fossils. In Twelfth Night, Shakespeare took readers back six hundred years before the birth of Christ and told of a boy named Arraign, who was cast into the sea by pirates. A dolphin came to his rescue and carried the boy home to Greece on his back. Plutocrat wrote Thathos, Odysseus' son, was saved from drowning as a young child through the .....
Number of words: 2758 | Number of pages: 11 |
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Botany And Botanists
<view this essay>.... are very important in each of our lives, because they increase and improve our supply of medicines, foods, building materials, and other products made from plants. If one were to try and pin-point the most important thing a botanist does, it would be impossible. They do so much for us, yet get little recognition for it. Whenever you take an aspirin, eat some vegetables, or even sleep in the house that was once built, you can thank a botanist for it all.
Many people, such as myself, would wonder why someone would want to be a botanist. The main reason anyone can name is that plants have intrigued people for thousands of years. Plants are used f .....
Number of words: 1114 | Number of pages: 5 |
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Development Of Operating Systems
<view this essay>.... new generation able to handle and perform more complex tasks. The folowing report examines the , and how the changing tehcnology shaped the evolution of operating systems.
First Generation Computers (1945-1955)
In the mid-1940's enormous machines capable of performing numerical calculations were created. The machine consisted of vacuum tubes and plugboards, and programming was done purely in machine code. Programming languages were unheard of during the early part of the period, and each machine was specifically assembled to carry out a particular calculation.
These early computers had no need for an operating system and were operated directly from the opera .....
Number of words: 1757 | Number of pages: 7 |
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