.... based syndrome, characterized by any or all of three types of behavior: hyperactivity, distractibility, and impulsivity. Unlike similar behaviors caused by emotional problems or anxiety, ADHD does not fluctuate with emotional states.” About 1-3% of the school aged population has the full ADHD syndrome, without symptoms of other disorders. Another 5-10% have partial ADHD syndrome with one or more other problems, such as anxiety or depression.(CHADD) Gender and age affect the way the patients display their symptoms. Boys are more likely to have the disorder than girls. The symptoms of ADHD usually decrease with age, but those symptoms related wit .....

.... are a result of continental drift. During the Earth’s existence, the magnetic fields have never been stable. Solidified magma containing magnetic imprints reveal periods of time when the Earth’s magnetic fields have actually been reversed. Convection is caused by non-uniform temperature in a fluid and density differences. This continuous convection is the cause of plate movement. Each complete cycle, called a convection cell, drives the plate in the direction of the cell. How does a ‘solid’ mantle move? The mantle may be solid but, as with most solids, it will deform if long-term stress is applied. Presently, there are more than fourteen plates in the Earth .....

.... of computer and information technologies throughout businesses and homes. The two most notable changes that have increased potential of linking buyers and sellers are the number of households owning personal computers (over 33% in the U.S.) and the exponential growth of applications of the Internet, most notably the World Wide Web (WWW). With increased penetration of computers, particularly multi-media computers equipped with CD-ROM drives and modems, subscription-based services such as America Online (AOL), Prodigy, and Compuserve, where consumers are able to check airline flight schedules and make reservations, purchase a wide variety of products, and .....

.... to kill and eat mammals in various parts of Africa. Monkeys were recorded to be consumed in the Gombe National Park, the Kasakati Basin, and the Budongo Forest. Moreover, there is new evidence that chimpanzees near the Ugalla River of western Tanzania also consume mammals.(Riss, 1990:167) Cannibalism has also been recorded both in the Budongo Forest, Mahale Mountains and the Gombe National Park. In Jane Goodall's, May 1979 article in the National Geographic called "Life and Death at Gombe" it reveals the first time that chimpanzees who were always perceived to be playful, gentle monkeys, could suddenly become dangerous killers. "I knew that some of our .....

.... especially for today’s constantly changing world. Firstly, the developmental devices used in the essay are vital to it’s effectiveness. Without them, the author would not have been able to supply sufficient proof to his findings and convince the reader of the true severity of acid rain. Collins used noteworthy facts throughout the essay to prove is point about how severe acid rain truly is. The facts that he used added substance to the essay by validating his point of view. In the same way, the author used effective illustrations and examples to prove his point. These examples and illustrations simplified the readers understanding as to how severe ac .....

.... and a few organs as well. The glands that are involved are the pituitary, thyroid, thymus, parathyroid, and adrenal. The organs, which also play a vital part, are the pancreas, gonads, kidneys, heart, and parts of the digestive tract. All these different glands or organs work together in the production of certain hormones. Those produced in one location will almost always have an effect on many other areas of the body, not just the surrounding tissues. An analogy that fits very well with the study of the endocrine system is that of a message in a bottle. We can think of the body as a river, and a specific hormone may be a bottle containing a message. .....

.... The government once stated that they had captured extra terrestrials. (60 minutes, CBS) On the contrary, most scientists now agree that almost all sightings and stories of extra terrestrials are not authentic. The United States government has records of thousands of UFO sightings since 1948, including photos of alleged UFOs and interviews with people who claim to have seen them. Since UFOs were considered a potential security risk, the report on these sightings was originally classified as secret. (Craig, 917) When the report was later declassified it showed that 90 percent of all UFO sightings could be easily explained. Most of the sightings turned out t .....

.... of dreams. According to Freud, dreams have a meaning which can be deciphered if one looks deeply enough. In his view, the dreams concerns the dreamers past and present, and it arises from unknown regions within. He saw the dream as significantly analogous to a hysterical symptom. On the surface, they both appear meaningless and bizarre, but they become understandable when understood as veiled expressions of an unconscious clash between competing motives. Freud developed an elaborate theory and how the mind works while asleep. In 1953 sleep researchers led by Nathaniel Kleitman made the important discovery of rapid eye movement--or REM-- sleep. .....