.... per second. Eventually the tornado becomes fragmented and dissipates causing the end of the tornado. Tornados are the cause of great destruction and devistation in the area in which they occur. For example the Tri-State Tornado of 1925 occured in the Kansas, Oklahoma, and Texas States. This tornado was one of the largest tornados recorded in history. It killed nearly 625 people. However, the tornado which strikes closest to home has occured on what Canadians have come to know as "BLACK FRIDAY". The tornado of "Black Friday" touched down on July 31st, 1987 at 2:59 pm. .....

.... the bones and how they were found gives the archaeologist clues as to how the bison were butchered. Some bones were found with spear points in the bodies, some whole skeletons were found closer to the bottom, and some bones were scattered all over. It can be inferred from the patterning of the bison bones that they were butchered differently. Middle range theory also plays a part in the Olsen-Chubbuck site. From the visible remains of the bison, we can estimate from the skeletal remains of the bison that the total meat was 60,000 pounds and the total amount of people capab .....

.... to gradual for them to be noticed early. At the beginning of the 20th century most rivers and lakes like the river Tovdal in Norway had not yet begun to die. However by 1976 local inspectors were noticing that many of the lakes were beginning to show signs of death. Fish were found dead along the banks of many rivers. As the winters ice began to melt off more and more hundreds upon hundreds more dead fish were being found. As scientists continued to work they found many piles of dead fish, up to 5000 in one pile, further up the river. Divers were sent in to examine the bottom .....

.... eleven other strains of es were found in Korea and Eurasia. In 1976, Hantaan virus was isolated from the Apodemus agreavius coreae mouse. Using the microscope, one could see the round microbes that were stacked in rows along the epithelial lining of the lungs (CDC website 6). Each infection still involved mild kidney infections. The same type of rodent always carried the virus, and people came in contact with the microbes through skin exposure or inhalation of infected animal feces or urine. Research continued on this virus and in 1981, it was first cultured in human cell .....

.... the shapes of clouds, the paths of lightning, the microscopic intertwining of blood vessels, the galactic clustering of stars." (Gleick, 1987) The man most responsible for coming up with the Chaos Theory was Mitchell Feigenbaum, who was one of a handful of scientists at Los Alamos, New Mexico when he first started thinking about Chaos. Feigenbaum was a little known scientist from New York, with only one published work to his name. He was working on nothing very important, like quasi periodicity, in which he and only he had 26 hour days instead of the usual 24. .....

.... very radioactive and will not become stable for a very long time. Such a harmful substance is a great health concern and needs to be disposed of. Another problem is the energy it needs. It uses an element that is hard to find and which will eventually run out. Also, the reaction cannot be easily stopped and if it can't be stopped, a nuclear meltdown can occur. This is a serious environmental concern. Fusion is different. It is a process that combines two nuclei into one, releasing an amount of energy that is far greater than that of fission. In a common type of reactio .....

.... crops and left the other half of a field was left unplanted for a year so as not to exhaust the soil. This system led to problems, because dividing the land in half led to shortages in the production of food because only half of the field was being used. This system of agriculture needed some minor adjustments to increase the production of food without destroying the soil in the process. This new system came about around the year 800. Farmers began to use a new system, the three-field system, to farm their crops. The three field system used one large field like it’s earlier .....

.... World War II that by 1954 the possibility of launching a satellite was no longer in serious doubt. In October 1954 the Committee for the International Geophysical Year (IGY), announced to other countries that they were considering launching small satellite vehicles for space exploration. In April and again in July 1955 the USSR and the U.S. announced plans to launch for the IGY. The USSR launched SPUTNIK 1 on Oct. 4, 1957, and the United States launched EXPLORER 1 on Jan. 31, 1958. These two provided a lot of information for further work on . Emphasis was first placed on t .....