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The Atomic Theory

... are formed in. Dalton also discovered the inert gases, and their failure to react with other substances. In 1969 a Russian chemist, named Mendeleyev who a renowned teacher developed, the periodic law of the properties of the chemical elements (which states that elements show a regular pattern when they are arranged according to their atomic masses). Mendeleyev wrote a two-volume book called Principles of chemistry (1868-1870), which later became a classic. These books included an improved version of the periodic table. Sir J ...

Number of words: 423 | Number of pages: 2

H.i.v. About Aids

... infected with the virus could be saved. This is possible because if we know that HIV survives through mutations then we might be able to come up with a type of drug to retard these mutations allowing the immune system time to expunge it before the onset of AIDS. In order to be able to fully comprehend and analyze this question we must first ascertain what HIV is, how the body attempts to counter the effects of viruses in general, and how HIV infects the body. Definition HIV is the virus that causes AIDS. HI ...

Number of words: 2048 | Number of pages: 8

The Use Of Pollen Analysis In

... of a hard outer shell - the exine - pollen is particularly resistant to chemical attack and will survive in most conditions; the only environments which are truly hostile to this shell are abrasion, such as may be the case on sandy sites, and oxidation. However, the most favourable conditions for preservation of the pollen record are acidic, anaerobic sites such as peat bogs. This high degree of survivability combines with another factor inherent in the nature of pollen - the large amount produced - to make pollen analysis one of the mo ...

Number of words: 930 | Number of pages: 4

Natural Forces

... and I were in a car and all of a sudden a twister passed through the town. Towards the end of 1989, my family and I were on vacation in Fort Myers, Florida. We drove from Trenton, New Jersey all the way to Florida where my grandfather lived. It was a long trip to undergo, especially being six years old and knowing that my father never stopped the car. By the time we arrived at Fort Myers, it was a beautiful sunny day. The wind was gusting enough to pull my hair back, and I was admiring the palm trees, coconuts, and lizards near the Gulf ...

Number of words: 646 | Number of pages: 3

Darwinism

... at a very young age. He was one of those children that are always into things, trying to find out how things work. He was especially interested in the outdoors. He was a very smart child, but his father, Robert Waring Darwin II, didn't think so. "Darwin had a youth unmarked by the slightest trace of genius." (Rachels,7). This didn't stop Darwin, though. He never lost this curiosity throughout the years. At the age of 18, he made a very important discovery about flustra, which is "1. That the ova of the Flustra possess organs of moti ...

Number of words: 1665 | Number of pages: 7

I.t. Doctors Database Analysis

... just a few clicks of a mouse button away instead of loads of paper-based files in a big fat cabinet away. If you were to misplace a file in your office, it would probably be hard to find it, whereas if you lost a file on a computer you could use the find utility in Microsoft Windows 95, 98 or 2000 (by pressing the button and F at the same time) and the file would be found in a few seconds. On a computer you could automatically put the files in alphabetical order by whatever- name, GP, date of birth e.t.c. However, in an office cabinet it re ...

Number of words: 1175 | Number of pages: 5

Genetic Engineering. 2

... scientific extremists and anti-technologists have risen in arms to block its budding future. Spreading fear by misinterpretation of facts, they promote their hidden agendas in the halls of the United States congress. Genetic engineering is a safe and powerful tool that will yield unprecedented results, specifically in the field of medicine. It will usher in a world where gene defects, bacterial disease, and even aging are a thing of the past. By understanding genetic engineering and its history, discovering its possibilities, and answering the ...

Number of words: 2977 | Number of pages: 11

The Big Bang And Steady State Models

... primeval fireball--an extremely hot dense state from which the universe rapidly expanded.1 The Big Bang was the start of time and space. The matter and radiation of that early stage rapidly expanded and cooled. Several million years later, it condensed into galaxies. The universe has continued to expand, and the galaxies have continued moving away from each other ever since. Today the universe is still expanding, as astronomers have observed. The Steady State model says that the universe does not evolve or change in time. There w ...

Number of words: 1285 | Number of pages: 5

Appalachian

... major subdivisions except for New England lie in strips parallel to the Atlantic and to one another. The mountains were formed due to several collisions between the African, Eurasian and North American Plates. Africa and North America were joined into one super continent. The collision of these land masses over 1 billion years ago metamorphosed the original rock producing the Pedler gneiss and Old Rag granite which can be observed in the Shenandoah National Park. In late Precambrian time this super continent began to rift apart under the te ...

Number of words: 1096 | Number of pages: 4

Gps

... car before you even buy it. But not everyone can afford cars like those, so you can buy computers to install into your car, these are also very expensive, but probably more preferred for those who just want the computer inside their car. But there's also another option, however, less convenient; laptops are being used by millions of people everyday, so with a CD-ROM drive and a antenna, you can hook up your laptop to your car with an antenna and have the same results as the ones that come with cars. Just because we have these in our cars ho ...

Number of words: 1215 | Number of pages: 5

The Software Industry Report

... from various sources, these include extracts from the Independent, Economist, Computer Business Review and the MINTEL reports for 1996 and also from various sites on the Internet. 3.0 Software is an extremely Labour intensive activity and therefore it is essentially a 100% value adding process. It could possibly be labelled as a unique commercial phenomenon, but it requires much maintenance and a continual need for improvement and enhancement. The software industry can be split into three broad sectors: ? Small Office, Home Off ...

Number of words: 2684 | Number of pages: 10

Formation Of Protocells

... (NH3), etc. These molecules what was needed to create life -- in fact, the percentage of hydrogen, oxygen, nitrogen, and carbon, together consists 99.5 % of all matters. In fact, the percentage of essential elements of life -- C, N, O, H, P, and S -- are quite similar from individuals to individuals. Energy wise, the Earth had plenty from a variey of sources Radiation: from the cosmic and radioactive isotope decays UV light: there were no protective ozone layer and thus immense heat. Electrical discharge from the never ending lightning ...

Number of words: 797 | Number of pages: 3

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