.... the decay of radioactive C-14, which has a half life of 5770 years. This makes this method useful for dating of recent fossils, with good accuracy, up to 50,000 years back. After 5770 years, half of the carbon-14 in a fossil decays to nitrogen-14. Since the ratio of carbon-12 to carbon-14 in a living organism remains the same as in the environment around them because the organism constantly eats and replenishes it, if it were to die, the ratio would change greatly after many years. It is the difference between this ratio now and the time is died that allows a date for it to be established. Potassium-argon dating, another dating method, is possible due to .....

.... tasks are shelved. Worst of all is the disintegration of your self-confidence. You fumble in speech and in action. The ringing of a telephone assaults you and you shrink from answering it.' …given by the famous writer W. Styrone, in his book entitled Darkness Visible, providing us with an in-dept description of his own personal experiences when he suffered from depression Over the course of the year, 17.6 million American adults suffer from a depressive illness. That is 10% of the population. (Pfizer, Dealing) Depression is a whole-body illness, including mind, mood, body, and thoughts. It effects everything from the way you sleep to the way you feel about .....

.... are the season of spring and the second three months are the months of summer. The vernal equinox occurs when the sun is directly over the equator and it complies with the first day of spring. It also means that the sun is an equal distance from the north and south poles. At this time both hemispheres 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 w .....

.... months of age every year from secondhand smoke. Children from birth to 2 years of age are especially vulnerable to lung diseases because their lungs are not fully developed. Asthma is more likely to develop with children who breathe secondhand smoke (www.alaw.org). It can also exacerbate frequent attacks. Babies are three times more likely to die form Sudden Infant Death Syndrome (SIDS) if their mothers smoke during pregnancy. Ear infection, coughs, sore throat and even cancer can also develop if children are expose to secondhand smoke. With all these harmful to children, there are ways to protect them from it. First, as a parent, don’t smoke. If you are a .....

.... been that the world itself was only a few hundred years old and that all creatures were made by God in those seven days as they lived exactly today (Campbell p 421). Aside from past resistance, Darwin also comes under scrutiny still today as missing fossils which are to have been the bridge between a two familiar species are not yet found (Hitching p 3). Whatever the reason of belief or disbelief in Darwin's theories, he astounded the scientific world as well as the public and was able to convince many in the presence of a misguided past belief. This fact alone makes him one of the most important people of science ever. Charles Darwin was born in Shrewsbur .....

.... that are linked together to form a chain. These chains look like a twisted ladder and are called a double helix. Each nucleotide consists of three units: sugar molecules called deoxyribose, a phosphate group, and one of four different nitrogen containing compounds, also called bases. The four are adenine (A), guanine (G), thymine (T), and cytosine (C). The deoxyribose molecule occupies the center of the nucleotide, with the phosphate group on one side and a base on the other. The phosphate group of each nucleotide is also linked to the deoxyribose of the adjacent nucleotide in the chain. These linked deoxyribose-phosphate subunits form the side rails of the la .....

.... With Mathematica, a program for Newton's method can be produced and a graph of the function can be made. From the graph, the a good initial guess can be made. Although Newton's Method works to find roots for many functions, it does have its disadvantages. The root sometimes cannot be found by using Newton's Method. The reason it sometimes cannot be found is because when the function is equal to zero, there is no slope to the tangent line. As seen in experimentation's, it is important to select an initial guess close to the root because some functions have multiple roots. Failure to choose an initial value that is close to the root could result in findin .....

.... or Distribution. When most people refer to LINUX, they are talking about this complete set of programs needed to run a computer, not just the kernel. Many people know of, or have at least heard of, UNIX. UNIX is both one of the oldest and one of the most powerful operating systems available today. "How can UNIX be old and yet powerful by today's standards”, you ask. The answer to this question lies in the history of UNIX; UNIX is a sort of subset of a much larger and more complex operating system called MULTICS. Both UNIX and MULTICS were developed decades ago for very large computers; only now, decades later are personal computers finally powerf .....