.... is unknown. Cu is Copper's chemical symbol. It contains 29 protons/electrons (atomic number) and 35 neutrons. It's atomic weight is 65.39. Copper is an orangy, red metal that is found in ores as a solid form. It can be found in such countries as the United States, Chile, Zambia, Zaire, Peru, and Canada. The most important copper ores are the sulfides, oxides, and carbonates. From these copper is obtained by smelting, leaching, and electrolysis. It's alloys, brass and bronze, long used, are still very important; all American coins are now copper alloys; gun metals also contain copper. The most important compounds are the oxide and the sulf .....

.... of force generation also explains differences in metabolic rate over the size range of birds measured. However, for a given rate of force generation, birds use on average 1.7 times more metabolic energy than quadrupeds. The rate of energy consumption for a given rate of force generation for humans is intermediate between that of birds and quadrupeds. These results support the idea that the costs of muscular force production determines the energy cost of running and suggest that bipedal runners use more energy for a given rate of force production because they require a greater volume of muscle to support their body weight. Key words: locomotion, ene .....

.... States who have NE. Many children have no lasting problems from bed-wetting, however, some children who wet the bed can develop psychological problems, including low self-esteem. This disorder also affects family members through anger and frustration because of the condition. One important reminder to parents with children who suffer from this condition is that bed-wetting should not be thought of as a behavioral problem. There is no medical proof to show that children wet the bed to spite their parents. Also, most children will outgrow bed-wetting eventually. As parents, the best way to help your child is to be .....

.... much scientific evidence and studies, there is now physical proof that human beings may have evolved from ape-like creatures. Even with this, there are still disputes in the paleoanthropological field of whether or not this is true. Still, many choose to believe their religious creation stories where a God created humans. Whether it is Johanson's idea on human evolution or Leakey's or even the Roman Catholic's creation story, all are an individual own interpretation and neither wrong nor right. A paleanthropologist by the name of Donald Johanson is one of the many who have a very different view on the origin of humans. In 1974, he discovered forty p .....

.... The depressive episodes are characterized by intense feelings of sadness and despair that can become feelings of hopelessness and helplessness. Some of the symptoms of a depressive episode include anhedonia, disturbances in sleep and appetite, psycomoter retardation, loss of energy, feelings of worthlessness, guilt, difficulty thinking, indecision, and recurrent thoughts of death and suicide. The manic episodes are characterized by elevated or irritable mood, increased energy, decreased need for sleep, poor judgment and insight, and often reckless or irresponsible behavior. Bipolar affective disorder affects approximately one percent of the .....

.... powerful tool that will yield unprecedented results, specifically in the field of medicine. It will usher in a world where gene defects, bacterial disease, and even aging are a thing of the past. By understanding genetic engineering and its history, discovering its possibilities, and answering the moral and safety questions it brings forth, the blanket of fear covering this remarkable technical miracle can be lifted. The first step to understanding genetic engineering, and embracing its possibilities for society, is to obtain a rough knowledge base of its history and method. The basis for altering the evolutionary process is dependent on the underst .....

.... human hunters who wanted to chase animals out of the woods. As prolonged as these fires were, they had limited catastrophic effects on the nomadic humans. This is due to the low population density and the fact that the fires were not very intense. As people began to change from a hunting-gathering society to agriculturists, they settled in communities. Homes built among the wild brush were perfect prey to wildfires. Initially, wildfires were put out immediately and people were barred from setting fires in open spaces. Due to the policy of fire suppression, only one percent of all wildfires escaped early control. The land was safe from fires .....

.... 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 to be celestial objects, such as stars or bright planets like Venus, or atmospheric events such as auroras or meteors falling through the atmosphere. Many other sightings turned out to be ob .....

.... 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 discuss product performance with other consumers, are becoming very popular. Households in Chicago and San Francisco can purchase groceries from home using computer software marketed by Pe .....

.... the disease are: anyone who is sexually active; health, dental, and emergency workers; adoptive families with children form Asia, Africa, South America, Eastern and Mediterranean Europe (as these areas have a high number of people infected); drug users; and anyone in close contact with someone infected. This is not as scary as it seems, for you cannot contract the virus through sneezing, coughing, or holding hands. A surprising fact about hepatitis B, considering it is preventable, is that one in twenty people are or will be infected in their lifetime. There are one million people infected in the United States. More than 350 mill .....