.... nature of UFOs is the demonic force hypothesis. It states that the UFOs represent demons coming to earth for the final battle between good and evil (Randle 112). The not so widely accepted theory is that of hallucination/dream. Its major debunker is that mass hallucinations would have to be fairly common. The final hypothesis on UFO sightings is the null hypothesis, which states that they simply do not exist (Randle 114). There are three different specific types of sightings. First comes the Close Encounter of the First Kind. In this setting, a UFO is seen at close range, but does not interact with its environment, this type is t .....

.... the teaching of computer science has been developed in the same period. During 1955 to 1959, some universities developed their own computers. They organized short courses. Computer technology comes from the U.S. to Japan. Usually a technology is developed in the U.S.. After that, it comes to Japan so Japanese is late at all and most manuals are written in English so it is easy to lean computer for people who speak English; however, most Japanese people who live in Japan cannot understand English so they have to translate English to Japanese to understand the manuals. It needs much time. Usually Japanese universities teach co .....

.... 1) Acid rain will dissolve alkaline rocks and soil, or will neutralize the alkalinity. 2) Acid rain will increase the acidicy of already acidic rocks and soil, such as granite, or the soil which results from corroded granite. Acidic chemicals, and alkaline chemicals react to each other by reducing the alkalinity or acidicy of each other. Which ever has the strongest pH level, usually will neutralize or reduce the pH of the other, but after the reaction is complete, both substances have undoubtably changed, their pH moved closer to neutral ( pH 7 ). This knowledge led to the use of Salting. Salting ( dropping salt, ch .....

.... low concentration of that substance. In other words, a movement down the concentration gradient. Osmosis is very similar to diffusion, however it involves the concentration of water. Osmosis, like diffusion, is a passive process, and does not require energy to occur. Active transport does require energy though, as it involves movement up the concentration gradient. This involves protein carrier molecules binding to the substance and moving it into or out of the cell, against the concentration gradient. If a large molecule needs to be moved in or out of the cell, then two other processes, endocytosis and exocytosis are used. Endocy .....

.... hypothesizes, to further our understanding of any number of things. We divide science into categories and then sub-divide it even farther, until we can hide the connections and pretend that they really are separate. The difference between psychology and physics is not as extreme as one would believe if they were to read their definitions. Though the means are different the goal is the same for all science: to increase our understanding of our earthly domain, and to improve ourselves. The Greeks created this guiding principle more than two thousand years ago. Greek atomic theory was not the work of a single person, in fact it was a .....

.... regarded as one of the most important UFO events in history, an extensive review of the UFO literature of the 1950s finds no mention of it beyond the first press accounts in early July 1947. The only know reference to it as a UFO crash was in a 1955 lecture by broadcaster and UFO enthusiast Frank Edward. Even in the 1960s the UFO literature mentioned it only three times, twice in both brief instances, in the latter rather vaguely. A widely published story reported that personnel from Roswell Field had a "flying disk" in their possession. When the material was flown to Fort Worth, Texas, the commander told the press that .....

.... three-hundred feet and diameters of more than ten feet. In 1990, the number of spotted owls dropped to 2000 breeding pairs. The preservation of any species contributes to the biodiversity of an area. In an ecosystem, the absence of one species creates unfavorable conditions for the others. The absence of the spotted owl could have a significant effect on the North Coast forest ecosystem. In order to send the owl population in the right direction, the major problem for their decline would have to be remedied – loss of habitat. This fact combined with the owls' short life expectancy and late age of breeding only exacerbat .....

.... time bombs or logic bombs. A time bomb is a program that performs an activity on a particular date. A logic bomb is a program that performs an activity when a certain action occurs, such as an employee being terminated. A worm, which is similar to a virus, copies itself repeatedly until no more memory of disk space remains. To find , anti-virus programs have been developed. Besides detecting viruses, anti-virus programs also have utilities to remove or repair infected programs and files. Some damaged files cannot be repaired and must be replaced with uninfected archive files. The table below outlines some techniques us .....

.... in the positioning of the nucleus within the cell. Due to the central vacuole in a plant cell, the nucleus is usually not located in the center of the cell; rather, it is usually crowded nearer the plasma membrane. In most animal cells, however, the nucleus is located in the center of the cell, as this position is ideal in the process of mitosis, and there is no large central vacuole located in animal cells. The nucleus contains the genes which control the entire cell, and, within the eukaryotic division of cells is uniform among all cells, that is, every eukaryotic cell has a nucleus which functions in the exact manner as other .....

.... craves a minute amount of the chemical to balance its desires; however, the mind says, "If a little is good, a lot is better." Others chose drugs as substitutions for self-confidence, solutions to problems, relaxation, freedoms from anxiety, self-esteem, and satisfying feelings. Whatever the incentives may be, it is apparent that all of the reasons why people chose to do drugs have to do with changing how they feel; they are about avoiding boredom or solitude, or feeling significant, part of a group, tranquil, or "good". Unfortunately, people don't usually realize that drugs are not solutions to their problems. Drugs ar .....