PAPER Topics

... of (Scientific American, “”). Second-hand smoke, inhaled by non-smokers, increases a person’s chance of acquiring (Beau Halton). Men who smoke increase their chance of dying from about 23 times and women increase their chances 13 times (“ Awareness Campaign,” 3/23/99). However, may also be caused by long term exposure to radon, a naturally present radioactive gas (SIRS, “What is Cancer?”). The residue of burned petroleum and coal can contribute to (Scientific American, “”). The development of seems to be also affected by genes. The gene histidine triad blocks the formation of tumors, so a defective gene could make one more li ...

... into their original form. Combinations of long and short bursts of electric current are sent through a circuit thereby encoding each letter of the alphabet. More efficient transmission facilities were developed as the mining industry developed. The discovery of electricity sped up the development of mining through electric lighting and better machinery and ventilation, which led to better materials for wires and cables. Telegraph lines were set up along the CPR in 1885 as a convenient root, but also to relay information about the position of each train along the track to avoid collisions. The telegraph was also the main source of information for newspapers. Like the telegraph, ...

... tiredness, numbness, and bladder problems are only going to get worse. But possibly the worst symptom of all are mental problems such as a loss of self-esteem and feelings of worthlessness. The most obvious effect that MS has on a person is a loss of coordination and balance; approximately 77 percent of people afflicted with MS experience this symptom (3). When my family went to the Grand Canyon for a vacation we had no idea that Kathy was afflicted with . We took a mule ride down to the bottom of the canyon, and when we reached our destination there was a ranch where we stayed the night. As you might expect it was very warm at the bottom of the canyon in the middle of the summe ...

... A large-scale nuclear war would lessen food production over large expanses in the Northern Hemisphere, this could occur through acute climatic conditions which chilling or freezing temperatures occurring for brief periods during the growing season which could destroy crops or lower production. As result of the variety of potential physical and societal disruptions to agriculture from a large-scale nuclear war, agriculture in the Northern Hemisphere could be shut down or significantly reduced for the first growing season after war and maybe several growing seasons. Only the major grain-producing countries such as United States, Canada, and Australia had enough stored food to keep the ...

... and sickle cell trait. During 1945, Dr. Linus Pauling discovered that an abnormal form of hemoglobin was the reason for the sickness in sickle cell patients. These two took a train together and started talking about . Castle told Pauling about how the cells in sickle cell patients sickled when their oxygen level is low. Paling was amazed by this conversation and did further research on the disease. After that Pauling was able to tell which patient had sickle cell trait and which one had the disease. In 1956, Dr. Vernon Ingram made a distinction between normal and abnormal hemoglobin. Dr. Ingram used Pauling’s test to find the key difference. Like other proteins, hemoglobin is made ...

... qi researchers¡¦ best tool. In addition, while qi and the atom were both conceived by ancient philosophers, the notion of the atom was better developed by scientists than the idea of qi. Therefore, by looking back at the historical progression towards a belief in atoms and the deduction of their structure, we know how scientists built up the atomic theory. Consequently, the concept of historical progression will help us understand why the notion of qi is hard to define by physicists, and how it could be developed into a scientific theory. HISTORICAL PROGRESSION TOWARDS A BELIEF IN ATOMS The concept of the atom originated in Greek philosophy around six hundred B.C. with the question: ...

... gender roles described themselves as more traditionally feminine” (Handout - Diversity and Community). I believe that one's immediate family, rather than society, has a greater influence on gender roles. For example, girls who group up without a mother or older sisters tend to be less feminine because all they have are male role models. Another example of how the family influences gender roles is whether or not the mother works. A housewife who believes that the home is where she belongs tends to influence her daughter in thinking the same way. One of my close friend's mother is a housewife and my friend wishes to be one herself. Parents are one of the biggest factors in determining ...

... to carry on cellular respiration. Some bacteria, called facultatibe anaerobes can live in either the presence or absence of free oxygen. They obtain energy either by aerobic respiration when oxygen is present or by fermentation when oxygen is absent. Still other bacteria cannot live in the presence of oxygen. These are called obligate anaerobes. Such bacteria obtain energy only fermentation. Through fermentation, different groups of bacteria produce a wide variety of organic compounds. Besides ethyl alcohol and lactic acid, bacterial fermentation can produce acetic acid, acetone, butyl alcohol, glycol, butyric acid, propionic acid, and methane, the main component of natural gas. Most bacter ...

... with certain traits that allowed him to pass through the filter of natural selection. Man was supplied with both physical and intellectual traits that were responsible for allowing him to surmount the other species living beside him. He was able to use his physical traits in order to become the greatest predator, and severely diminish the possibility of become another species prey. His physical traits were also very adaptable and so man was able to change with the environment and continue to flourish, as other species became extinct. Man was also able to use his mind to continue winning in the game of survival. He created society, which set him apart from his animal counterparts, ...

... to our moon because it has a lot of craters. The craters, which cover seventy-five percent of Mercury’s surface, were formed by huge rocks that smashed into the planet’s surface. The largest crater is called the Caloris Basin and it is 1400 km in diameter and is flooded with molten lava. Mercury also has many cliffs that are usually over 300 miles long and two miles high. The rest of the planet’s surface is smooth and may have been formed by lava flowing out of cracks in the surface. Temperatures on Mercury vary greatly because of it’s closeness to the sun. The surface temperature on the sunlit side is about 430 degrees Celsius, while the dark side may reach temperatures of -17 ...