... most notably the World Wide Web (WWW). With increased penetration of computers, particularly multi-media computers equipped with CD-ROM drives and modems, subscription-based services such as America Online (AOL), Prodigy, and Compuserve, where consumers are able to check airline flight schedules and make reservations, purchase a wide variety of products, and discuss product performance with other consumers, are becoming very popular. Households in Chicago and San Francisco can purchase groceries from home using computer software marketed by Peapod, Inc. This latter service allows consumers to search within a product category using attributes such as price ...
... The heroes were taken from his observations of children. In 1902, Dr. G. F. Still, described the behavior of a group of hyperactive children. He knew of no medical reasons for their behavior and made no mention of their educational needs or social skills. He said that part of the problem with ADHD children was "deficient training in the home." In 1923, researcher, F. G. Ebaugh, was one of the first to publish a professional paper recognizing ADHD as a long-term problem requiring cooperation and intervention by several professional disciplines. Over the past four decades, dozens of labels have been used for a collection of traits that has come to b ...
... have the same amount of sun as the sun makes its way north. Before the vernal equinox the sun hits the northern surface at an angle instead of hitting it directly. By hitting the earth's surface at an angle there is not as much radiation warming the surface. As the earth rotates and the sun moves further north the temperature increases and the weather turns warmer. During the three months of spring the sun continues to move north and warming the earth more efficiently. At around June 21st the sun is directly facing the tropic of cancer. At this time the movement north comes to a halt and the earth's surface is at its warmest point, the summer solstice. I ...
... they were not fully aware consequences that would happen after many years of use. Power projects (later AECL CANDU), based in Toronto. Ontario and Montreal, Quebec became responsible for implementing AECL’s nuclear power program and marketing CANDU reactors. Nuclear power was cheap, if you did not have to worry about the waste. This was the answer to Ontario’s power problems, so they invested in the newest source of power at the time. Most people believed that nuclear power was a good change in Ontario’s power structure, and there would be no real problems in the future. Ontario needed a new source of power in the 1950s; they found it in nucle ...
... as a way of providing needed organs such as the heart and lung. Doctors might also view cloning as a way to find cures for diseases such as aids and cancer. Should people be created for the purpose of dying? Many people believe it is unjust to use animals for testing various products for humans, such as makeup and shampoo. Creating life for the simple purpose of injecting a deadly disease in the body to find a cure is just? Another purpose of cloning may be for work labor. Should society create people to work for others like robots? People have different beliefs to answer such questions. A few people believe cloning can be helpful for those unexpected events re ...
... bacterial diseases readily. Ever since antibiotics became widely available in the 1940s, they have been hailed as miracle drugs -- magic bullets able to eliminate bacteria without doing much harm to the cells of treated individuals. Yet with each passing decade, bacteria that defy not only single but multiple antibiotics -- and therefore are extremely difficult to control -- have become increasingly common. What is more, strains of at least three bacterial species capable of causing life-threatening illnesses (Enterococcus faecalis, Mycobacterium tuberculosis and Pseudomonas aeruginosa) already evade every antibiotic in the clinician's stockpile of more than 1 ...
... as a runner, but, if you do not get enough to eat, then it is doubtful that you will ever live up to your potential. Traits such as what you look like are inherited from your parents. Your potential is also inherited from your parents. Chromosomes contain the information of a person's potential height, potential strength against disease, and other physical characteristics. A human being has 23 pairs of chromosomes in every cell in his or her body (except reproductive cells). If, during a stage of growth, a fetus somehow loses one of these chromosomes, the baby may die, or have a birth defect. Since this error is written on their genes, they may pass it o ...
... disease between 30 and 50 years of age. Climate and weather has little, if anything, to do with the disease other than a psychological impact on the course of the disease. And, arthritis is a disease for which something can be done. Types As I have already stated, there are more than 115 different types of arthritis. I will include the six most common forms in this report. Osteoarthritis Osteoarthritis is the most common form of arthritis in Canada. This type is also referred to as "degenerative joint disease", because it is a consequence of the wearing out of the cartilage that covers the end of bones, usually in the major weight bearing joints ...
... Indicator was substance that had distinctly different colors in acidic and basic media. Phenolphthalein was a common indicator which was colorless in acidic and neutral solutions, but reddish pink was result in basic solutions. Strong acid (contained H+ ion) and strong base ( contained OH ) were 100% ionized in water and they were all strong electrolytes. Procedure: Part A. Investigating solid NaOH for use as a possible primary standard First of all, The weight of a weighting paper was measured in analytical balance, then added two pellets of NaOH and reweighed the total amount of those. At the end of the lab, reweighed the combination and recorded all re ...
... has increased one degree Fahrenheit over the last 120 years, making the world hotter than it has been in 100,000 years. From the beginning of the industrial revolution, concentrations of carbon dioxide have increased by 30%, concentrations of methane have doubled, and nitrous oxide has risen by 15%. The increases of these chemicals have enhanced the heat trapping capability of the atmosphere of the earth. Sulfate aerosols, cool the atmosphere because they reflect light back into space, but sulfates do not live long in the atmosphere. Scientists still do not know what exactly is heating up the earth. Some say the earth is going through a natural cycle ...
