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Term Papers on Science

The Potential Effects Of A Depleted Ozone Layer
Number of words: 2351 - Number of pages: 9

.... is dissipating " and the cause is laid primarily to man - made chemicals ( Bowermaster et al, 1990, p.27 ). If enough of these man - made chemicals are released, " the ozone layer would be weakened to such an extent that it does not filter out the sun's invisible and dangerous ultraviolet rays " ( Jones, 1992, p.36 ). Such a scenario would drastically alter society and the environment. Ozone depletion has been described as " potential catastrophe " and " a planetary time - bomb " ( Way, 1988, p.9 ). The four main areas affected by a depleted ozone layer and t .....

Dna 3
Number of words: 3302 - Number of pages: 13

.... the bases are abbreviated as A, C, G, and T (respectively) for simplicity reasons. At the smallest level, DNA is organized into a double helix. The DNA helix is then repeatedly coiled to allow more of it to fit into a compact space. This helix replicates and passes on its information to the body's cells. In humans, all the DNA is packaged into 46 separate molecules called "chromosomes." The chromosomes each contain thousands of genes, with each gene specifying how to make a particular protein necessary for cellular function. Scientists have long t .....

Number of words: 1005 - Number of pages: 4

.... 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 than the knowledge of the overall behaviour patterns " (Markham, 1980). Orangutan males, however .....

Number of words: 746 - Number of pages: 3

.... someone has been exposed to the other form of , genital . This is because there are very often no symptoms that go along with the virus. This is not always the case though and when symptoms do occur they are often seen as a cluster of blister sores, usually on the vagina, vulva, cervix, penis, or anus. For genital , symptoms may last several weeks, go away but only to return again weeks, months, or even years later. Symptoms may also include pain in the infected area, itching, burning feeling if urine flows over sores, and possibly an inability to urinate .....

Birth Control
Number of words: 1292 - Number of pages: 5

.... rate for combination regimens and a 99.5% effectiveness rate for progestin only regimens in clinical trials. It is extremely important to take the pills on a regular basis and at a regular time of day (say after dinner or with breakfast every day) as effectiveness drops with improper usage. The birth control pill cannot be used as a "morning after pill" without the advice and monitoring of a physician. Common side effects of birth control pills are nausea; vomiting; cramps; bloating; breakthrough bleeding (light bleeding at the start of the regimen); spot .....

Bridging Technology And Academe
Number of words: 4303 - Number of pages: 16

.... themselves with the Internet?; 2) What are the various Internet technologies available to sociologists?, and; 3) How can faculty begin to integrate these technologies into their classrooms and research. Key words: teaching sociology, information technology, on-line teaching Introduction Information technology is quickly becoming the hub of efforts within the higher education community. Indeed, colleges and universities have demonstrated a fierce rush to amass technological tools, and are only now addressing the possibilities for adapting them to academic .....

Computer Aided Drafting And Design
Number of words: 484 - Number of pages: 2

.... large, clumsy, elaborate machines which needed lots of human intervention to one program on a floppy disk. When the power of computers increased, so did the possibilities of CADD. Images on CADD systems are drawn with the aid of a keyboard, mouse, or tracking ball. One selects the starting point of a line, the ending point, and the line is drawn. A scale at the bottom of the screen tells how long the line will be. On some CADD systems, the computer itself can measure how long the line will be while the operator inputs the length of the line. Lines are the ba .....

Evolution And Creation
Number of words: 601 - Number of pages: 3

.... to this day. this is called the theory of evolution. His book was called “The Origin of Specie.” Alfred R. Wallace, came out with a theory that was almost identical to Darwin’s theory. Darwin’s theory was much more developed and better known. For example Darwin pointed out that farmers would take certain qualities from two different plants and mix them together and it would produce the desired plant. He believed this happened in nature also and he called it “the survival of the fittest” or “natural selection. .....

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