.... 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: "There's Betelgeuse in Orion's left shoulder and Rigel is his foot." And once you recognise Orion, you can remember that Orion's Hunting Dogs are always nearby. Where did the come from? OK .....

.... nitrogen changes into nitrogen oxide. These escape in to the air as poisonous gases. Some smokestacks release chemicals like mercury, arsenic, and aluminum. Some of these minerals are changed in to gases and others become tiny specks of ash. As these chemicals drift, they may change again. They may react with other chemicals in the air. When sulfur dioxide combines with water, the result is sulfuric acid. When nitrogen oxide gas combines with water, the result is also another acid. When the clouds releases rain or other precipitation, the acid goes with it. This is called acid rain. The level of acid is measured in pH levels. The pH scale begi .....

.... between the cells is called Nuclear Transfer. In this process the nucleus of one donor cell is removed and placed into a lab dish and starved of nutrients; it is then placed into a lab dish with a fertilized egg cell. Naturally, the cell that was starved will try to fuse with the healthy cell but it will need a little help. These two cells are then electrified thereby causing the two cells to fuse together combining their genetic structures. Cloning / 3 Now that we have established the scientific basis of cloning, let me tell you how cloning can directly benefit humanity. There are many health issues that can be avoided .....

.... successful hunt, and again in the early morning. Habitat & Human Impact once ranged throughout Africa and from Europe to Iran and India. By 1900 were no longer found in Syria; today Asiatic are limited to the Gìr Sanctuary in India. also roam Africa south of the Sahara, particularly the Serengeti National Park in Tanzania and the Kruger National Park in South Africa. This drastic reduction in range came about as humans and domestic livestock spread into savanna lands. Because live in open areas, they are easily shot by hunters and herders. fur coats are a highly prized possession by poachers, and are worth a lot. Over the last 200 years, ove .....

.... work at, you discuss benefits with the person who hires you, but if you own your own salon, you have no benifits, but you can decide your own vacations. As a cosmetologist you usually would work a full work day. Most people work 44 hours a week, but some work 48 hours or more. There are many ways to get schooling to be a cosmetologist. You could go to either a public or private vocational school, which some high schools offer. You could also go to a beauty school. You must be 16 or older to go to a beauty school. In your classes your training courses may include lectures, demonstrations and practice. Students usually practice with mannequins. .....

.... presence of chlorine within the exocrine cells, was identified in 1989 and is known as transmembrane conductance regulator (CFTR) (Hopkin, 1998). is the most common genetic disorder in the white population (Hopkin, 1998). Almost every article or book about begins with a statement similar to the one above. People who have genetic disorders are born with them. The inherited genetic defect causes a chemical error in all the cells in their body (Silverstein, 1994; Wagner, Reynolds, Moran, Moss, Wine, Flotte, Gardner, 998; Shapiro, 1991; Drake, 1995). In children and adults with CF, a mistake in a single gene disables a type of protein that funct .....

.... the stimulus and background, length of time exposed to the stimulus. * Minimum separable: shortest distance by which two lines can be separated and still be perceived as two lines. "During the day, the earth has a predominantly bluish cast..... I could detect individual houses and streets in the low humidity and cloudless areas such as the Himalaya mountain area.... I saw a steam locomotive by seeing the smoke first..... I also saw the wake of a boat on a large river in the Burma-India area... and a bright orange light from the British oil refinery to the south of the city (Perth,Australia.)" The above observation was made by Gordon Cooper i .....

.... the man who gave the school of thought its name. The main goal of Confucianists was to return a gentlemanly society to China. The core of Confucianism concerned social structure. Confucius taught that a man should respect and obey those of higher rank than himself, whether they be the father of a family, or the emperor of a nation. But even with absolute obedience, Confucianists believed that men should practice restraint and benevolence in those inferior to them. At the same time, those in high status were expected to lead virtuous lives, and to set examples for those that followed them. Confucianists believed that the moral code of man wa .....

.... in a green house is to prevent convection currents from mixing cooler air outside with the warmer air inside. Although water is the most important factor in the greenhouse effect, is a major reason why human regions experience less cooling at night than do dry regions. Changes in both water and carbon dioxide play an important role in climate changes. For this reason many scientist have expressed concerns over the global increase of carbon dioxide in resent decades, largely as a result of the burring of fossil fuels. In many other factors of the earth’s present climate remain more or less constant, the carbon dioxide increase should raise the .....

.... new challenges in the vast, unknown realm of the computer. They ask, “What is this thing called e-mail, and how does it work?� What are they to do when a teacher assigns the students to send in all assignments by e-mail? Eventually, they will have to learn the basics of e-mail which, in turn, reveals even more problems with being computer illiterate. For an essay, the teacher requires that they go to the library to do research. The computer illiterate happily walks into the library to do their research. Imagine their surprise when they find out that the main tool of research is one of those darn computers. The poor illiterates stare blankl .....