.... sleep, waking up too early in the morning, brief periods of REM sleep, unusually long periods of stage 1 (light) sleep, or unusually brief periods of stage 3 and 4 ( deep, restorative) sleep (depression.com 1). Weight and depression are also commonly associated with each other. Many people begin loosing interest in eating which results in weight loss. Others may experience the opposite effect and gain weight by overeating. Various antidepressant medications are known to have different affects on appetite and weight (depression.com 3). Suicidal thoughts are also a more common symptom of dep .....

.... evolutionists and creationists. Using sexual selection and the origins of human intellect as his proponents, Gould argues his opinion in the favor of evolutionary thought. In this essay titled "Natural Selection and The Human Brain: Darwin vs. Wallace," Gould tells about the contest between Darwin and another prominent scientist named Alfred Wallace over two important subjects. These topics, one being sexual selection and the other about the origins of the human brain and intellect were debated by men who generally held the same views on evolution. However on these two subjects, Wallace chose to differ as he described it .....

.... a market-based alternative called "idea futures" is suggested. It is described through both a set of specific scenarios and a set of detailed procedures. Over thirty possible problems and objections are examined in detail. Finally, a development strategy is outlined and the possible advantages are summarized. THE PROBLEM THE SCIENTIFIC REVOLUTION Four centuries ago, some Europeans complained that the existing academic institutions were biased against them. Insiders, it was said, were "inflated by letters" and shunned anyone who dared "speculate on anything out of the common way" [De]. Outsiders -- astrologers, chemi .....

.... The working principles of lasers were outlined by the American physicists Arthur Leonard Schawlow and Charles Hard Townes in their 1958 patent application. The patent was granted but was later challenged by the American physicist and engineer Gordon Gould. In 1960 the American physicist Theodore Maiman observed the first laser action in solid ruby. HOW A LASER WORKS A laser is made up of several basic components. One is called active medium, which consists of atoms of a gas, molecules in a liquid, ions in a crystal, or any of several other possibilities. Another component consists of some method of introducing energy into the .....

.... viewed from above or below. As the air flows over the wing producing lift, it grabs onto the wings surface and causes drag. Drag can be measured by the equation D=Cd 1/2 (pV2)S, much like the lift equation. The drag coeficent Cd is found, again, by determining the shape of the airfoil and then finding the angle of attack. Drag is less than lift up to a certain angle of attack. After that, the air encountering the surface of the wing is either pushed off or deflected in a way to cause turbulance. So, what does lift and drag have to do with airflow? As hinted in the above paragraph lift and drag are directly related to the .....

.... such as those raised in labs or pets would not be used because the results would be inaccurate. The inaccuracy would be that these "tampered frogs" have been out of the wild for so long that they would not have the same range of frequency as those in the wild. I would first like to do this experiment on the male bullfrogs because of their deeper croaks, observe the data and then possibly repeat the experiment on the female species. In the first part of the experiment, I want to observe whether the bullfrog can hear the frequencies sent out to it and if so will it move in the direction that the sound is coming from. Inside .....

.... put the blame on some other stressful thing or even other people. Changes in the level of energy a person has can be caused by depression. One possible reason for this ties into their eating and sleeping habits. If a person starts to eat less, or sleep less they will notice a drop in how much energy the have. Some people with depression may become edgy or fidgety. Also the people may become very easily upset or agitated. Even if the person has gotten enough sleep and food they may still feel sluggish and tired an unusually large amount of the time. This can be attributed to depression. People with depression of .....

.... specific gene can be expressed in all the cells of a transgenic organism and the effect on the organism's development and function can then be monitored. It is also possible to use transgenic procedures to produce animals in which a specific gene has been deactivated in all its body cells. Certain genetic disorders of humans can be studied with this technique in laboratory animals if the disease-associated gene occurs naturally in both humans and an appropriate study species, such as a mouse. In such human disorders, symptoms are caused by natural dysfunction of the gene. In the study animal the same gene can be deactivated or made .....

.... earth where the acceleration of gravity is relatively constant, it has been natural for us to confuse the concepts of mass and weight. To study the difference, we need to separate these two "parameters." We could either leave the earth's gravitational field so that we would have no weight, or create an experimental situation where weight is not a factor. An easy way to do this is to use floating objects. Floating objects still have all their mass, and move almost friction-free in still water, but we don't notice their weight since the water supports (opposes) it. A small block of wood floating in water can be pushed back and forth .....

.... growth of algae, which in trun, collapses the food chain. Thus, leaving our worlds subsistence and commercial fishermen with out food and money. With the already descendeing food chain on our earth, the warming water also effects the atmosphere, resulting in more extreme temperatures, more rain, and more drought periods, costing more money to our already debted economy, and the world. An example (demonstrated here by alaska) brought about by the extreme temperatures was during the 1976-77 el nino, which brought severe cold to the polar regions. The polar regions were so cold, that the bears in those regions did not hibernate. .....