... be a particle and particles do not have any mass. Ideal gases obtain no volume unlike real gases which obtain small volumes. Also, since ideal gas particles excerpt no attractive forces, their collisions are elastic. Real gases excerpt small attractive forces. The pressure of an ideal gas is much greater than that of a real gas since its particles lack the attractive forces which hold the particles back when they collide. Therefore, they collide with less force. The differences between ideal gases and real gases can be viewed most clearly when the pressure is high, the temperature is low, the gas particles are ...

... Earth's existance, 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. Approximately 4.55 billion years ago, the Earth was just a ball of molten material. Since then, parts of the Earth have cooled forming the solid crust-mantle. This process has been occurring for roughly about 3.8 billion years. The mantle is about 2900 km. thick, which lies above a layer of molten magma that still exists today. The immense heat from the magma (approximately 2700(C) causes convection in the mantle (Fig ...

... spend all of their lives in trees, using their hands like hooks to swing arm-over-arm between branches. Known as brachiation, this method of locomotion is so fast that can easily overtake a person running on the forest floor. The great apes include the gorilla, the orangutan, and two species of chimpanzee: the common chimp and the bonobo (sometimes called the pygmy chimpanzee). Great apes are bigger than and also much less acrobatic. However, they are still good climbers. While orangutans spend most of their life in trees, where they use their long arms and dexterous hands and feet to grasp branches and v ...

... that passive euthanasia is acceptable when the person to die has consented. Other positions include situations where a terminally ill patient is unable to consent as justifiable, because it resolves a hopeless situation. Conversely, even with this gradation, some opponents to euthanasia believe that voluntary, passive euthanasia is the same as suicide; involuntary euthanasia is considered to be murder. Because euthanasia poses classic dilemmas as to its morality, it is not surprising that many issues arise in the legal and medical arenas. In law, the resolution of a particular case cannot always be applie ...

... closer to four-thousand. The Killer Whale is also very easily identifiable as male or female. The male's dorsal fin can reach seven feet tall and stands straight up off the middle of his back. The female's dorsal fin is much shorter, usually about three feet, and instead of standing straight, forms a crecent arc on her back towards the tail. Although Killer Whales are not used for oil-based products they have over and over again been found with harpoons sticking out of their backs. Research soon found that fishermen were shooting them to keep them from eating all of a days catch. This was not the first time some ...

... similarities, although classification systems more commonly still place great apes in a separate family, Pongidae. If the single grouping, Hominidae, is used, the separate human line in the hominid family is distinguished by being placed in a subfamily, Homininae, whose members are then called hominines—the practice that is followed in this article. An examination of the fossil record of the hominines reveals several biological and behavioral trends characteristic of the hominine subfamily. Bipedalism Two-legged walking, or bipedalism, seems to be one of the earliest of the major hominine characteristics to h ...

... of homo sapiens in causing extinction should not be distinguished from that of any other species. This position, most often espoused by individuals whose other views are curiously much more anthropocentric, is contrary to some well established facts. Unlike other creatures that have inhabited the Earth, human beings are the first to possess the technological ability to cause wholesale extermination of species, genera or even entire families of living creatures. This process is accelerating. Wildlife management efforts initiated during this century have been unsuccessful in stemming the tide. Most public attent ...

... also threaten human health, and harm birds, fish, and many types of ecosystems." The threat to human health is due to local climate. The reason why local climate threatens human health is that "extreme temperatures can directly cause the loss of life". And also many serious diseases appear in warm places. But not only is it that "warm temperatures can increase air and water pollution, which in turn harm human health" (ESP Health 1). The hot temperature, which could be the most direct effect of climate change, causes the heat problem. Because their cardiovascular system has to work harder to keep the body coo ...

... surpass titanium in tensile strength. To add strength and improve flexibility, are sometimes fortified with short-fiber additives, mostly fiberglass. This is known as a polymer composite. One particular polymer has three times the strength of tempered steel and is being used in bullet proof vests. Another composite will be used to fasten together the sections proposed space stations. have also been used in cars, including the Chevrolet Camaro and the Pontiac Fiero. New are being created with more strength and flexibility by combing two chemically different and producing a block copolymer. Combinations of ...

... and shots that conventional medicine uses. Despite the argument between these two sides the best possible cure for ones self should be instead of choosing a specific method to help yourself use a combination of the two to help heal. This subject of relates to many people in today’s world. The media, the government, and even parents and children have something to do with this vast new form of medicine. continues to grow every year, which makes it a very important issue in our society, in fact 40% of American use some form of herbal or other in the world today (Jonas). This fact just shows how widely used t ...