.... 40-70, though the disease has been reported in both younger and older persons. Survival after the confirming diagnosis is, on average, two to five years. Progression of ALS varies with each individual; therefore, some will live longer--up to 10 years, and about five percent will exceed 12 years. In some cases, the disease seems to plateau. Many patients are able to live productive and satisfying lives especially with the use of assistive devices for daily living, and later in the disease, augmentative communication equipment. Men and women are affected in almost equal numbers. Also, up to 10 percent of ALS cases are familial occ .....

.... had hemorrhages. The experimenters compared their results to those experiments conducted at the University of Utah and the Argonne National Laboratory in which beagles were injected with Strontium 90. They concluded that the dose needed to produce “early death” in fifty percent of the sample group differed from test to test because the dogs injected with Strontium 90 retain more of the radioactive substance than dogs forced to inhale it. Also, at the University of Rochester School of Medicine a group of experimenters put fifty beagles in wooden boxes and tested them with different levels of radiation by x-rays. Twenty-one of .....

.... being argued. Most people believe that birds evolved from reptiles. Because of birds mainly delicate bones, few fossils have been left behind for scientists to study. The earliest bird fossils come from archaeopteryx. The fossils that have been discovered from archaeopteryx include six partial skeletons and one single feather. Archaeopteryx , unlike modern birds, had teeth, a reptile like tail, and three claws on each wings. Scientists think it could fly, but only weakly. Approximately 85 species and 50 sub species have become extinct in the last 300 years. Over half of them occurred in the 1800’s. Another thirty percent occ .....

.... both the positive and negative symptoms of schizophrenia (Advokat et al., 1999; Robinson et al., 1999). Moreover, a reduction in negative symptoms has also been noted to occur as individuals are treated with amisulpride and (Danion et al., 1999). The use of newer drugs to treat schizophrenia has produced fewer side effects in most patients. However, it has been found that although the use of risperidone to treat patients is very effective in treating the symptoms, there may be negative side effects for women using the drugs (Caracci,1999). As well, haloperidol has been one of the most widely used drugs for treating schizop .....

.... on our skin is a clue to what is happening. The movement of the windsurfer has a different explanation. The windsurfer is propelled along by a sail which collects mechanical energy from the winds that sweep along the water. This energy has been produced by the sun which warms the earth's surface and sets the air above in motion. The sun's heat comes to the earth as a form of radiant energy. When the heat reaches the surface of the earth, it causes the land or seas to rise in temperature. The sun is very hot. Infact, the center of the sun can reach temperatures of up to 27 million degrees Fahrenheit. This is because o .....

.... in a suitable medium for fertilisation to occur in a culture dish. If fertilisation does not occur after 72 hours, the oocytes (incompletely developed eggs) and sperm are disposed of. The resulting embryos are observed for the next few days. - A small plastic tube is inserted through cervix to place embryos into the uterus. The patient is able to go home a few hours later with minimal discomfort. During the first two weeks after embryonic transfer, hormones (such as Progesterone or HCG) may be administered. The procedure above can bring either joy or disappointment. A successful patient from the Atlanta Reproductive He .....

.... Clairvoyance is the extra sensory perception of events that are taking place at the exact time of the perception, but the sensor cannot know of these events through any of the five senses. Precognition is the extra sensory perception of events in the future. And finally, telepathy is the extra sensory perception of someone elses mental state. For centuries, stories about ESP sounded suspicious to those who had scientifically trained minds. After all, they were usually tales told after the fact. The event had already happened when the subject might have foretold it in a dream, for example. So, it was impossible to te .....

.... is discharged, which is the current, is decreased. The outcome of this is that the capacitor will be completely discharged meaning that both the current and voltage will equal zero. At this time all the energy stored in the circuit will have been transferred to thermal energy at the resistor. A heater uses electrical power. The power dissipated in a resistor is in return proportional to the resistance and the square of the current that passes through it. As the energy is changed from electrical to thermal the resistor gets hot. In long distance transmission, current is reduced without reducing power by increasing voltage. The res .....

.... possibly be prevented, it is essential that the process and formation of and earthquake be understood. Earthquakes are caused when the earth's crustal plates move, rub, or push against each other. The earth's crust (the outer layer of the earth) is made up of seven major plates and approximately thirteen smaller ones. The name plate is used to describe these portions of the earth's crust because they are literally “plates” or sections, composed of dirt and rock. These plates float on molten lava, called magma. Since the plates are floating on magma, they can slowly move. The place where friction occurs between plates i .....

.... is: 1) Heat an ordinary pop can on a hot plate. 2) After about fifteen minutes take the can off the hot plate and put it upside-down in a pan of cold water. 3) Record my observations on a piece of paper. 4) Write my conclusions in my science fair logbook. For the second experiment my procedure is: 1) Get an empty gallon milk jug at room temperature. 2) Heat to water to just before the boiling point on a hot plate. 3) Fill the milk jug about quarter of the way with hot water. 4) Put the lid on tightly 5) Wait one hour and record my observations and conclusions. For the third experiment my procedure is: 1) .....