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Essays on Science

Global Warming 2 -
Download This PaperWords: 642 - Pages: 3

... the earth because of emissions from polluters such as factories and cars, excess energy is trapped in the earth's atmosphere and causes a warming of the earth called "Global Warming." Starting in the mid-1700s, human activities began to alter the composition of the atmosphere. Vast supplies of charcoal, and later coal and oil, fed the growing fires of the Industrial Revolution. The carbon stored in these fuels was released to the air as carbon dioxide - a gas that traps heat in the atmosphere. Today, for every one of the more than 5.8 billion people on Earth, nearly six tons of carbon dioxide is spewed into the air every year. As a result of our activities, the ...



Frogs
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... into a frog. Most frogs lay their eggs in water. Others will lay their eggs some where safe, then carry them to water where they hatch into tadpoles. At this stage they have gills, no legs, and a tail. As they mature, their gills and tail disappear, and they develop lungs and legs. This period of tadpole life can be divided into three stages. The first stage, called “ premetamorphosis,” lasts about 50 days (Patent 54). The second stage, in which the hind legs grow, is called “prometamorphosis,” and lasts about 21 days. When the legs are about as long as the body, the third stage, which is called “ metamorphic climax,” and takes place very rapidly, begins. ...



Nuclear Fission
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... These neutrons can then strike two more uranium atoms. The split of each atom will produce two more neutrons. The more atoms that are split the more neutrons produced that will split more atoms. As this process is repeated over, it becomes a self-sustaining chain reaction. This energy producing process is called a chain reaction. uses the uranium-235 element because it is the easiest of all atoms to split apart. Uranium-235 is made up of many protons and few neutrons. Protons naturally repel one another so a nucleus made up of many protons tends to ‘fly apart’ more easily. In addition, uranium makes a good nuclear reactor because it can sustain a series of f ...



Cold Fusion
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... are researching it today. Detailed Description of Chemical Process The theory to how this fusion works is the Muon Theory. The muon theory is as follows: Speeding muons knock electrons out of their orbits around deuterium and tritium atoms. Muons replace the electrons and form a smaller atom. This "muo-atom" the n captures another nucleus. The muon orbits more tightly around the two captive nuclei leading them to overcome their natural repulsion of each other and fuse. This reaction produces a larger nucleus that almost immediately shatters, releasing energy. It also frees the muon, which can then repeat the cycle, causing several hundred more s ...



The Discovery Of The Electron
Download This PaperWords: 61 - Pages: 1

... mass of the proton or neutron. The charge of the electron is -e = -4.8 x 10^-10 esu ...



Reforestation
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... could help slow the atmospheric accumulation of carbon dioxide by replacing old-growth forests with faster-growing young trees". A new study of young and old forests says how this is in fact not true. Loggers have said that new trees pull the carbon dioxide better than old trees, and this may seem true, but it is not. There is one point being overlooked from all of this. The older, larger trees can store much, much more carbon dioxide than a new tree could. By cutting and burning these magnificent seasoned trees, the CO2 is being released back into the atmosphere. These releases of carbon dioxide add up in our surroundings, only to intensify Global Warmi ...



Orangutans
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... of orangutans and it has recently been suggested that they may be a separate species. The Borneo male has relatively large cheek pads, a tremendous laryngeal sac and a square shaped face. The Sumatran male has small pads and laryngeal sac, a ginger coloured moustache, a pronounced beard, and a diamond shaped face. Individuals can also be distinguished chromosomally, biochemically, and by their cranial characteristics. There is a great deal of individual variety in the orangutan. "Each orang-utan had a distinct personality and in dealing with such highly intelligent animals in captivity, the keeper's knowledge of the individual was probably more important tha ...



The Greenhouse Effect
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... oil, coal, and natural gas. Another contributing factor is the the amount of forest logged, every second of the day the area of a football field in trees is cleared by either being logged or burnt. Two other deadly greenhouse gasses which are entering the atmosphere even faster than carbon dioxide are methane and chloroflourocarbons, although they are not as damaging in the long run. These increases are likely to affect worldwide temperatures dramatically. In 100 years time the average temperature for most parts of the world will increase from between 2C to 6C if greenhouse pollution continues at its present rate. This temperature increase would d ...



Cancer 3
Download This PaperWords: 1345 - Pages: 5

... works, and what it works on (osteoarthritis). Also included is an in-depth look at osteoarthritis, or degenerative joint disease (DJD), which is the most common type of arthritis, affecting over 16 million people in the United States today (1). Arthritis refers to inflammation or swelling of the joints. The most common form of arthritis is osteoarthritis, which is also known as degenerative joint disease because it is characterized by joint degeneration and loss of cartilage. Cartilage is the shock absorbing material between joints. The weight-bearing joints such as the knees, hips, and spine, as well as the hands, are the joints most often affected by osteoarth ...



Cloning
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... Roslin Institute in Edinburg, Scotland (Staples). It was a sheep by the name of Dolly. Dolly was cloned from an adult sheep; using donor DNA and mammary cells from a female sheep cloned it. The process is very technical and I don’t fully understand it myself. From what I have researched I have come to understand that currently is very “Hit or Miss”(Hawley). From 277 attempts, Dolly was the only successful attempt. The point is however that we now have a man created sheep, what else could be done in the near future. There are many different goals for genetic . Would you like to clone someone close to you who had died? In the movie “Gattaca” you get a peak at somet ...




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