.... a sugar called deoxyribose. Attached to one end of the sugar is a phosphate group, and at the other is one of several nitrogenous bases. DNA contains four nitrogenous bases. The first two, adenine and guanine, are double-ringed purine compounds. The others, cytosine and thymine, are single-ringed pyrimidine compounds. (Miller, 141) Four types of DNA nucleotides can be formed, depending on which nitrogenous base is involved. The phosphate group of each nucleotide bonds with a carbon from the deoxyribose. This forms what is called a polynucleotide chain. James D. Watson and Fra .....

.... its possibilities, and answering the moral and safety questions it brings forth, the blanket of fear covering this remarkable technical miracle can be lifted. The first step to understanding genetic engineering, and embracing its possibilities for society, is to obtain a rough knowledge base of its history and method. The basis for altering the evolutionary process is dependant on the understanding of how individuals pass on characteristics to their offspring. Genetics achieved its first foothold on the secrets of nature's evolutionary process when an Austrian monk .....

.... issues. Different religious groups regard cloning in different ways, but most agree on one point. Cloning puts the work of God into our own hands. The creation of life then becomes a manufacturing of duplicates instead of a "creative act of God". It is also important to consider the repercussions of cloning on the cloned individual. Numerous psychological problems may arise if a person discovers that he or she was cloned. How would a child feel if they found out that they were created to be used to donate organs or replace a lost loved one? A cloned child may also feel obl .....

.... The air begins swirling around the storm center, for the same reason that the air swirls around a tornado center. As this air swirls in over the sea surface, it soaks up more and more water vapour. At the storm center, this new supply of water vapor gets pulled into the thunderhead updrafts, releasing still more energy as the water vapor condenses. This makes the updrafts rise faster, pulling in even larger amounts of air and water vapor from the storm's edges. And as the updrafts speed up, air swirls faster and faster around the storm center. The storm clouds, moving wi .....

.... history of science. In science his main discovery was that when white light passed through a prism, it was broken up into a broad spectrum of colors. When that spectrum was shone back through another prism that spectrum became a white light again. Next he passed a single color of light through a prism, the color was the same when it came out the other end this led him to believe that white light was composed of all the colors. During this time he also formulated the corpuscular theory of light, which states that light is made up of tiny particles, also known as corpuscles. .....

.... directly to the work in physics for which he is so well known. His conclusions put emphasis on shapes, numbers, and motion which are all properties that lend themselves to support through "reasoning back and forth between theory and experiment." I feel that Galileo's argument is a valid one because it explains relations in nature and the physical world through mathematical analysis. This allows him to define a world outside of human existence that can be logically calculated and explained. His view describes the world in which living creatures live and not contrasts it .....

.... is left to decay, it would take approximately 4.5 billion years for it to turn into half a pound of Lead ( Howter, 1996, Radiometric Dating: An Exercise in Faith). As it turns out, this is what scientists believe to be. The assumption that the earth is 4.5 billion years old has raised doubts in the minds of some skeptics who question the accuracy of the data used in radiometric dating! They claim that without knowing the exact amount of Uranium in the beginning, most of the calculations will be based on assumptions and if one is to assume the amount of Uranium that exist .....

.... in acidic water droplets that can be carried by prevailing winds, returning to Earth as acid rain, snow, or fog. This effects the lakes by changing the pH balance. As the water pH approaches 6, crustaceans, insects, and plankton begin to disappear. When the pH is slightly above 5, major changes start to happen, less desirable species of mosses and plankton may begin to flourish, whereas others will lessen in numbers and die off. Below pH of 5, the water is to acidic for many fish, the bottom is covered with undecayed material, and the shores may be dominated by mosses. Animal .....