.... man because it could be taken as a free metal with out difficult separation techniques. "At some unknown time during the Stone age man learned to value gold for its unusual qualities"(Encyclopedia American 1997). So it is unknown who discovered gold. Gold has the best working qualities of any metal. It is an unusual metal in its color, Luster, malleability and it can with stand corrosion. "By at least the fourth millennium BC, gold was found through both placer and vein(lode) mining and by the time of the early cultures from which modern civilization is descended the search for gold was wide spread"(Green 1968). Gold is mainly extracted through mining .....

.... The concept of electric transmission is very simple to understand. The wire that conducts the electric current is made of atoms which have equal numbers of protons and electrons making the atoms electrically neutral. If this balance is disturbed by gain or loss of electrons, the atoms will become electrically charged and are called ions. Electrons occupy energy states. Each level requires a certain amount of energy. For an electron to move to a higher level, it will require the right amount of energy. Electrons can move between different levels and between different materials but to do that, they require the right amount of energy and an "empty" slot .....

.... and use of laboratory animals. HISTORICAL BACKGROUND Use of Animals in Research Some of the earliest recorded studies involving animals were performed by Aristotle (384-322 B.C.), who revealed anatomical differences among animals by dissecting them (Rowan, 1984). The Greek physician Galen (A.D. 129-199) maintained that experimentation led to scientific progress and is said to have been the first to conduct demonstrations with live animals--specifically pigs-a practice later extended to other species and termed "vivisection" (Loew, 1982). However, it was not until the sixteenth century that many experiments on animals began to be recorded. In 1628, Wi .....

.... Codeine is classified as a narcotic, it has the same painkiller effect as morphine but is only one-sixth to one-tenth as strong. Codeine occurs as a colorless or white crystals or as a white, crystalline powder and is slightly soluble in water and freely soluble in alcohol. The phosphate and sulfate salts of codeine occur as white, needle- shaped crystals or white, crystalline powders. Why is it used? Codeine is most useful in the relief of mild to moderate pain. It is also used as a cough remedy because it suppresses the part of the brain that triggers coughing, and as an anti-diarrheal drug, because it slows down muscle contractions in the intestinal wall. T .....

.... amount of dust, dust storms can occur. Mars is also a very cool atmosphere; too cool for the survival of civilization. Some of the countries who have made these descriptions include the Soviet Union, Russia, and America. The Soviets are obsessed with space travel, and always have been. They posses an ideal vision of life on Mars. The Russians pride themselves for their excellent space survival. Unfortunately, the country does not have the funds to carry out their survival plans. Lastly, many believe an American flag should be placed on the planet of Mars. The Americans have greatly contributed to the findings on Mars; they have helped figure out tha .....

.... nuclear fuel, the gravitational force that pulls the star’s material towards it’s center no longer has an opposing force to act against it. As a result the star collapses. A star that once had eight times as much matter as our sun and was 1,000,000 miles across, becomes a sphere only ten to fifteen miles across. As the star collapses, very small particles (called neutrinos) escape into space. After the star becomes a very small sphere, it explodes like a giant nuclear bomb and becomes a billion times as bright as our own sun. All kinds of matter and radiation are blasted into space. This matter and radiation travels through space at .....

.... remain illegal because they physically deteriorate and mentally destroy the body. Many people are fascinated about steroids because of their ability to build up the body. Whether taken by injection or the pill it increases strength and endurance. Steroids also help in the healing process of muscular tissue by first injuring them, then the muscles heal quicker adding more fiber increasing their bulk. Many athletes turn to steroids more often because they're cheaper then marijuana or cocaine. A ten week cycle of testosterone cypinate and methandrostone costs only about one hundred dollars. Steroids are also very hard to trace bec .....

.... cannot continue to do its functions without taking from a host and being a parasite it is considered an obligated parasite. 2. The adult fern plant in its dominate generation (sporophyte) develops sporangium on one side of its leaf. When meiosis is finished inside the sporangia and the spores are completed the annulus dries out releasing the spores. The spore germinates and grows into a prothallus which is the gametophyte generation. The antheridia and the archegonia are developed on the bottom of the prothallus. The archegonia are at the notch of the prothallus and the antheridia are located near the tip. Fertilization occurs when outside moisture i .....