... are totally imaginary things that poets, farmers and astronomers have made up over the past 6,000 years (and probably even more!). The real purpose for the is to help us tell which stars are which, nothing more. On a really dark night, you can see about 1000 to 1500 stars. Trying to tell which is which is hard. The help by breaking up the sky into more manageable bits. They are used as mnemonics, or memory aids. For example, if you spot three bright stars in a row in the winter evening, you might realise, "Oh! That's part of Orion!" Suddenly, the rest of the constellation falls into place and you can declare: "The ...

... section. When a tumor develops in this area it is usually painless, but almost always results in hoarseness and a change in the person’s voice. If the tumor occurs in the supraglottis, or the section above the vocal cords, it may cause a lump in the throat, sore throat, or earaches. When the tumor develops in the area where the larynx and trachea join, subglottis, the person experiences trouble in breathing, very noisy breathing. Constant coughing or a feeling of a lump that doesn’t go away are also signs of larynx cancer. Tumor development in the subglottis is very unusual and rare. As a tumor grow ...

... of fifty- five percent chlorine, and thirty-one percent sodium (Groliers). It makes up approximately ninety-seven and two tenths percent of the total volume of the world's water, and covers more than seventy percent of the earth's surface (Groliers). Sea water doesn't just contain hydrogen, oxygen, sodium, and chlorine; it also contains every naturally occurring element. Although seawater has a fairly constant ratio of major elements, salinity and seawater can fluctuate. Normally, the salinity is thirty-four to thirty-seven parts per thousand (ppt.), but on a particularly rainy morning, the salinity may decreas ...

... the nuclear energies nucleus are radioactive. These radioactive nucleuses can be contained and used as fuel for the power. Most of this power is fueled by uranium isotopes. These isotopes are highly radioactive. The isotope catches the fast moving neutrons created by the splitting atoms, it repels the slower moving protons and electrons, then gathers the neutrons and pulls them inward. While all these atoms are flying about they smash together then split many of many times, this is when the reactor grabs and pulls in the frictional energy to be processed into electrical watts. This usually causes heat or ...

... In order to prevent this, we need a new primary energy source that is environmentally benign. This source is renewable energy and is already readily available. The increased use of renewable energy, mainly wind and solar energy, and reduction of dependence on oil is the best way to solve our current energy dilemma. For the past fifty years, fossil fuels have been the main source of energy in the U.S. They are a great source of power, but unfortunately they also have many setbacks. The finite reserves of fossil fuels are being depleted at a rate one hundred thousand times faster than they are being f ...

... are useful for research. We will also be discussing the disadvantages and different techniques that result from the cloning of different organisms. First lets start with the history of cloning. The modern era of laboratory cloning began in 1958 when F.C. Steward cloned carrot plants from mature single cells placed in a nutrient culture containing hormones. The first cloning of animal cells took place in 1964. John B. Gurdon took the nuclei from tadpoles and injected them into unfertilized eggs. The nuclei containing the original parents’ genetic information had been destroyed with ultraviolet light. When th ...

... source causing more than local problems. Sulfur Dioxide (SO2) is released by fossil fuels when they undergo combustion. Power plants and other fossil fuel burning industrial areas release various forms of nitrous oxides. These two chemical compounds combine with the water in the atmosphere to form what is known as . The negative effects has on the environment is the main reason legislation of industrial emissions from governments has been prompted. is harmful to the environment because of its low pH. It can harm the biotic components of earth, and also the abiotic components. It's high acidity degrades soil to th ...

... our knowledge of this mysterious planet will expand. The atmosphere of is quite different from that of Earth. It is composed primarily of carbon dioxide with small amounts of other gases. The six most common components of the atmosphere are Carbon Dioxide at 95.32%; Nitrogen at 2.7%; Argon at 1.6%; Oxygen at 0.13%; Water at 0.03%; and Neon at 0.00025 %. Martian air contains only about 1/1,000 as much water as our air, but even this small amount can condense out, forming clouds that rise high in the atmosphere or swirl around the slopes of towering volcanoes. Local patches of early morning fog can form in valleys ...

... Research suggests that people who commit suicide, whether depressed or not, tend to be more impulsive in their behavior. Manic-depressives, due to their spontaneous nature, are more likely to commit suicide than depressives. Manic depression involves alternating episodes of serious mania and depression. An affected person’s mood can swing from excessive highs (mania) to deep hopelessness (depression), usually with periods of normal mood in between. Some individuals may display mixed symptoms of both mania and depression at the same time, while others may have fewer symptoms of mania (also referred to as ...

... or object in the air that has no obvious explanation. The expression unidentified flying object ". . . is thought to have origionated with Air Forse Captian Edward Ruppelt . . ."(Ritche 220). This was introduced to replace the term flying saucer. UFO sightings first started in the late 1800s, but there weren't that many until the 1940s. In the 1940s UFO sightings were being told all over the world. Since the 1940s UFOs are seen every day by people all over the world. Ufologists have come up with a system to divide UFO incidents into three major types of close encounters. First, close encounter of the first ki ...