.... process even more. Over the past 200 years the emissions of greenhouse gases have been increasing due to the increase in technology that humans have developed (example, factories). These human-induced gases include carbon dioxide, methane, nitrous oxide, and ozone depleting substances such as CFCs, also known as Chlorofluorocarbons, hydrofluorocarbons, and perfluorocarbons. These gases are generated a number of human activities such as fossil fuel combustion, waste disposal in landfills, the use of a refrigerator, numerous agricultural and industrial activities, and the cutting down of numerous forests. These human practices have already changed t .....

.... of one hundred and two degrees Fahrenheit and that will last throughout the breakout. The rash is quite itchy and becomes dry, crusted, and falls off in a week. More bumps will come about every three days. Scars will be present if they get infected, badly scratched or removed. A physician is not usually not needed to make a diagnosis but after the symptoms appear it is still best to make sure it is the chicken pox and not something much worse. The physician can easily make a diagnosis by checking the basic symptoms. Chicken pox is controlled by keeping the infected person and anything the infected person has come in contact with away from .....

.... surface, to the stratosphere. Air in the stratosphere absorbs solar energy, or heat from the sun, which in turn creates a photochemical reaction that produces ozone – a benefit to the environment since ozone protects people, plants, and animals from harmful radiation. The ozone layer is important because it absorbs most of the damaging ultra-violet radiation from the sun before it reaches ground level, where it can cause sun burn, skin cancer and cataracts. Research suggests that any additional UV-B (ultra-violet radiation) at ground level could depress our bodies’ immune systems, damage the natural food chain and reduce crop yields. Although o .....

.... “used up� all of its nuclear fuel and then collapses under its own gravitational force. This happens because, as a star burns fuel, it creates an outward push, which counteracts the inward pull of gravity. Once the fuel is gone, the internal pressure of the star drops and it can no longer support its own weight. In a monstrous explosion, the outer layers are thrown off. And, at this same moment, the core collapses. This can happen rather quickly because gravity can crush an object 10,000 miles across to an object only 10 miles across in about one second. During the time that a black hole is created, the star shrinks down to an infinitely smal .....

.... tissues. It results from a long term interference with the flow of lymphatic fluid away from these tissues. The most frequently affected part is the leg. The most common cause of lymphatic obstruction is filaries. Filaries is caused chiefly by the species Wuchereria. When you have wherever it is located your skin will become rough and thickened like the skin of an elephant. Over 1 billion people in 73 countries are at risk of getting elephantiasis, and there are over 120 million people who already have it. New research has determined that albendazole, which has already become a standard treatment to fight intestinal parasites, .....

.... are also called literal creationists, because they interpret the two Genesis accounts of creation in the Bible literally and believe that the Bible is without error. They believe that the "day" mentioned in Genesis 1 signifies a normal 24 hour day. According to this creation the universe was established in six days. Biblical creationists interpret most sedimentary rocks as products of Noah's flood. The majority believes that the earth is under 10,000 years of age. Some believe 4004 BC was the year of creation. The person who proposed the methods by which natural processes cause the evolution of the species was Charles Darwin. He used natural se .....

.... waterways to their destinations, the alimentary canal guides food as it travels through the human body. The whole canal is lined with a mucous membrane. Digestion begins in the mouth. Here the food is cut and chopped by the teeth. The tongue helps mix the food particles with a digestive juice called saliva, which is secreted in the mouth. Saliva moistens the food so it can be swallowed easily. It also changes some starches into simple sugars. It is important to chew food thoroughly to mix it well with saliva. Thorough chewing cuts food into small pieces that are more easily attacked by digestive juices. Food should not be washed down with quant .....

.... negotiating with an American company to develop prenatal diagnostic tests, which, because the current tests are time consuming and technically difficult to do, are restricted to women over 35 and those who have a family history of chromosomal abnormalities. Prenatal tests using Willard's probes would be much simpler and faster to perform and could be available to all pregnant women who wish to take advantage of the technology. Current prenatal testing involves growing fetal cells in vitro and examining them, over one or two months, to see if there are two copies of a particular chromosome, which is normal, or one or three, which is abnormal. A test .....

.... Rome and in the next year, obtained permission to study medicine at Padua. Before returning to Poland, he received a doctorate in canon law from the University of Ferrara. Copernicus lived with his uncle in his bishopric palace. While he stayed there he published his first book which was a translation of letters written by the 7th century writer, Theophylactus of Simocatta. After that he wrote an astronomical discourse that laid the foundation of his heliocentric theory; the theory that the sun is the center of our solar system. However, it was 400 years before it was published. After leaving his uncle, he wrote a treatise on money, and began the w .....

.... aquatic animals, the circulatory system removes oxygen, and delivers waste carbon dioxide. Land vertebrates have developed a different approach to the problem of gas exchange, as water is not present in all of the terrestrial environment. Terrestrial vertebrates have developed lungs to solve this problem. Air enters through the nasal passages, or the mouth, passes through the trachea, then branches off at the two bronchi, and goes through many branching passages called bronchioles, which end in alveoli. Alveoli are sack-like structures where the circulatory system meets the respiratory system. Since terrestrial vertebrates do not live in water, they .....