... for the future; however, the threat of exists today and is a major cause for concern. The discovery of penicillin the 1940s proved to be the dawn of the antibiotic era. In less than two decades, major advancements had been made in the development of antibiotics. There were so many different antibiotics developed that doctors and scientists focused their attention on other problems plaguing the nation. Doctors prescribed antibiotics frequently, often when they were not even needed. According to a 1998 report by the Institute of Medicine, up to fifty percent of antibiotics are prescribed unnecessarily. This blatant overuse of antibiotics had a profound ef ...

... doubled, and nitrous oxide concentrations have risen by about 15%. Because of the increase of concentrations of these gasses, more energy is trapped within the Earths atmosphere, which is slowly increasing the average heat levels. Scientists predict that the average temperature will rise 1.6 – 6.3°F by the year 2100, which could wreak havoc with climates around the world. Why are greenhouse gas concentrations increasing? Scientists generally believe that the combustion of fossil fuels and other human activities are the primary reason for the increased concentration of carbon dioxide. Energy burned to run cars and trucks, heat homes and businesses, and p ...

... activate the name code. Another experiment (Experiment 2) indicated that memory for pictures and words, whether they were initially named or categorized had an effect on memory. Memory was better for words if they have been categorized and for pictures if they have been named. Experiment 3 showed the same results as the previous two experiments. The fourth experiment, with the introduction of less common objects, subjects could name the words faster than generating a category name for the words. Naming pictures are prone to interference when incongruent words are presented simultaneously. Word naming is not as much influenced by distracting pictures. Pictur ...

... Quality.) The EPA is an agency that deals with the protection of human health and safe guard of the natural environment, air, water, and land, which are important element for life to depend on. The agency’s principle is to protect all Americans from significant risks to human and environment where they live, learn and work. It tries to reduce environmental risk nationally. Its federal laws are enforced fairly and effectively to protect human and environment. Environmental policy is based upon the concern for natural resources, human health, economic growth, energy, transportation, agriculture, industry, and international trade. All parts of the society are involve ...

... the military art. Standard is used in petards, as a base charge or expelling charge for shrapnel shells, in saluting and blank fire charges, as the bursting charge of practice shells and bombs. Despite the fact that is called under one name, there are many different forms of . These are merely classified as how strong their reactions are, in other words, the size and power of their reactions. The most typical form of is the mixture of sulfur, charcoal, and potassium nitrate. Another form of this powder is known as the brown form, this is a mixture of saltpeter, charcoal, and sulfur. These pieces tend to look like little hexagonal or octagonal milk chocolat ...

... smoke and fumes from human activities could change the acidity of precipitation. Unfortunately his awareness was not considered an environmental concern until the 1950's. Around this time, increased levels of acidity were discovered in lakes in both Canada and Scandinavia. At first, this was looked at as an interesting situation, rather than a growing problem. Since that time, much research has gone into identifying the sources of acid rain and the damage that it causes. As research continued, the situation reached catastrophe proportions in the late 1970's. By this time, thousands of lakes in Canada and Scandinavia had been declared dead, devoid of life, while em ...

... and get good grades, then get a good job, make some money, marry someone you love, and live happily ever after... ...because, after all - Big Brother is Watching You! - --------------------------------------------------------------------------- Big Brother's Guide to School The Dreaded Reports actual examples........... START OF FILE -------- ---------------------------------------------------------------------- INVENTIONS OF THE EARLY NINETEENTH CENTURY The art of inventing has been around since remedies have been needed and solutions have been required to ...

... energy sources. Hydroelectric power generation was made more efficient by the establishment of the Federal Power Commission in 1920. Although additional hydroelectric plants were being built, the simultaneous development of larger and more cost-efficient steam-power plants made it obvious that only very large and costly hydroelectric installations could compete effectively, and that the federal government would have to assume a major share in their construction. Motivated by the search for the multiple use of water resources, including navigation, flood control, and irrigation, in addition to power production, the Tennessee Valley Authority, or TVA, started govern ...

... the first test limitation treaty, the Limited Test Ban Treaty. The TreatyÕs signers agreed not to test nuclear weapons in the atmosphere, in outer space, or underwater. The only testing that was allowed was underground testing. Attempts to control the number of nuclear weapons in the world began about 1970. The Strategic Arms Limitation Talks(SALT) was a convention held by the United States and the Soviet Union to limit the numbers in nuclear weapons. In 1982, the United States and the Soviet Union began the Strategic Arms Reduction Talks(START). Unlike the SALT talks, these were aimed at the number of nuclear weapons each country could obtain. Then there ...

... maturity at the age of two. The female produces one baby every other year. The koala almost never produces twins. In the female's pouch, there are two nipples. The female koala gives birth after a 20-35 day gestation period. When the joey (baby koala) is born, it is no longer than 2 cm and weighs no more than a 1/2 gram. The joey stays in its mother's pouch for 5-7 months. The term "joey² is used when you are talking about a baby marsupial. The mother gives "pap² to the joey, a liquid from the caecum (which is similar to the human organ, appendix.) This is thought to give the joey the ability to eat only eucalyptus leaves. When the joey emerges from the p ...