PAPER Topics

... – electronics, jewelry, coins ? Obtained From – crust of the earth, copper ores Atomic and Chemical Properties: In it’s usual state – atomic mass number 197 – gold is stable. However, there are radioactive (unstable) isotopes of mass number 186 to 196 and 198 to 203. Gold normally exhibits a chemical valence of one or three. Gold is the “noblest” of the noble metals (gold, platinum, palladium, and rhodium), so termed because of their inertness, or reluctance to enter into chemical reactions. Gold will not react with common acids but is attacked by a three-to-one mixture of hydrochloric and nitric acids. This combination is called aqua reg ...

... important tools available to the archaeologist. Though one further factor in the make-up of pollen enhances its value, namely the wide morphological variation between pollen from different plant species, most of which can be detected and classified using normal laboratory equipment. Pollen analysis is a technique which demands a high level of skill on the part of the excavator, scientist and interpreter to enable it to fulfil its potential. Collection of pollen samples can prove troublesome, the risk of cross-contamination is significant and efforts must be made to minimize the effect of any excavational bias. The number and ratio of pollen grains present in a sample can also be skewed ...

... effect that estrogen has on the blood vessels of females. There may actually be a direct correlation to reduced serum iron levels due to menses. Whereas men " build-up" iron in the blood, women cleanse themselves of iron buildup on the monthly basis. Meyers (1996) also states that oxidation, the process in which an atom increases its positive charges (Miller and Keane, 1992), of low density lipoprotein cholesterol is important in atherosclerosis, and since oxidation is catalyzed by iron, it has been hypothesized that the lower iron stores of women reduce their risk of CAD through lessened lipid peroxide, a by-product of oxidation. Numerous studies have been conducted to actually see ...

... another French naturalist named Lamark, proposed the first complete theory of evolution. He observed through is observations, depending on the extent to which the use of the structure, that an animal’s body structure is able to change during its life span. He also noted that organs and muscles, which were used often, tended to become larger and stronger. On the contrary, the organs and muscles, which were used seldom, tended to become smaller and diminish. With these observations, Lamarck concluded that these characteristics were hereditary. Proposed during two decades, the 1930s and 1940s, the synthetic theory involved a group of scientists. The group of scientists included tw ...

... shark, sailfish shark, and sunfish. The reason this shark is occasionally referred to as the Bone shark, is because when they die, they sink (their density is greater then the water's density) and are ravaged among the sea floor, by rocks, etc. (Steel, 1985, 132). However, when they do finally wash up on shore they are usually quite mutilated; their skeletons are all that remain. Hence the name, Bone shark. Although the Basking shark most appropriately resembles the Whale shark, its closest relative happens to be the * I could not find, in any of my many sources, the life span of the Basking shark* great white shark (http://www.askjeeves.com/MetaAnswe ...

... a wireless microphone called the transmitter mic, and the shotgun mic. The Omnidirectional Microphone comes in many different shapes and sizes. They are used when the background sound is normally low. They usually work by pointing the mic directly at the source of the sound. This mic is not good for loud background sound because the mic might not be able to distinguish between the different sounds. The Lavalier Microphones are small mics that have a more unidirectional pick up pattern which means that it has a limited reception range. These mics are attached to the reporters clothing or the subjects near the lapel level. When used in this manner they provide a very good mic, where the ...

... proves that genetic engineering is not beneficial to society. Accordingly, genetic engineering is unethical and therefore should be stopped. One reason why genetic engineering should cease is because genetic engineering disrupts society’s moral values and causes society to act out in destructive ways. An online survey done by Time Magazine in 1997, found that 11% of those who were interviewed believe that if clones are created in the future, the genetically created humans will only be good for “target practice” (Epstein 2). Another survey by the same magazine was conducted and found that 50% of those who were questioned believe that clones should be treated as lower bei ...

... is slowed down by brief interactions, and so appears to travel more slowly. ¨ This "slowing down" is accounted for by the index of refraction of the matter. 's properties can at first seem confusing and inconsistent because of the unique nature of light: light has the properties of both a wave and a particle. In some situations, light's behavior is more easily explained by thinking of light as a particle. In other situations, its behavior can only be explained if light is thought of as a wave. This duality of light between a particle and a wave is very difficult if not impossible to visualize. Instead it is much easier to see light demonstrate its properties in specific situatio ...

... in the past, nor will there be change in the future. This model assumes the perfect cosmological principle. This principle says that the universe is the same everywhere on the large scale, at all times. It maintains the same average density of matter forever. There are observational evidences found that can prove the Big Bang model is more reasonable than the Steady State model. First, the redshifts of distant galaxies. Redshift is a Doppler effect which states that if a galaxy is moving away, the spectral line of that galaxy observed will have a shift to the red end. The faster the galaxy moves, the more shift it has. If the galaxy is moving closer, the spectral line will show a b ...

... survival rates, the authors used mark-recapture techniques, it was found that probabilities for survivorship in experimental grid (0.79+0.10) were similar to that of control grids (0.71+0.07; 0.56+0.07). Results yielded that extra food intake and cover provided from branches may have not been helpful in increasing survivorship. No differences were measured in reproduction of percentage in adult females caught lactating between control and experimental grids. Based on experiments conducted by Keith and Windberg (1978), we should expect reduced weight loss during the winter months if natural feeding was effective in experimental grid. Results gathered based on growth rates and size yield a ...