.... mainly study the ways in which mankind is destroying the natural ecosystems of the earth and how people can help to revive them. Louise Miller once said that,". . . the ecologist is the one that brings together the study of all natural systems- earth, air, water, plants, and animals. Connections between living organisms and effects of their interactions are ecologists' concerns. . . . .The balance of nature, wherever it occurs, is what you will investigate and analyze"(17). Since a career as an ecologist is usually long term, there are certain characteristics a person should have in order to maintain a successful career. One of these characteristics that i .....

.... it happened es did very well in Australia. Their only competition was the Tasmanian devil, the thylacine, and the tiger cat. That competition is pobably what made these animals move to Tasmania which the never reached. es donŐt form packs like other wild dogs, they either live alone or in small families. es mate for life and mate once a year. The families have home territories that they rarely leave. families may co-operate to catch large animals. es chase their prey. They wear them out in a long chase because they arenŐt very fast runners. Large animals are chased until the es can catch them or until the weaker ones drop back. es donŐt always get .....

.... spread of these infections. If we don't begin to deal with problems like overpopulation and poverty, we may end up looking back nostalgically on the late twentieth century as a time of health and tranquility. As we show you, in the world of viruses, we are the invaders (Baddorf, Ourworld.compuserve.com)." Between the years of 425BC-430BC Athens' population was dramatically reduced when about 300,00 of its inhabitants died from some sickness. Some people now believe that this great plague was really Ebola. The first recorded outbreak of the Zaire string of the Ebola virus was in Zaire, in 1976. The doctors didn't know how to treat it and that meant .....

.... transcription and the other is translation. Although these biological processes slightly differ for eukaryotes and prokaryotes, they are the basic mechanisms for which proteins are formed in all living organisms. There are four main levels of a protein, which make up its native conformation. The first level, primary structure, is just the basic order of all the amino acids. The amino acids are held together by strong peptide bonds. The next level of protein organization is the secondary structure. This is where the primary structure is repeated folded so that it takes up less space. There are two types of folding, the first of which is beta-pleated sh .....

.... are now able to choose the sex of you child before they are born with great accuracy. What is on the horizon now, is the possibility of designing your child to be “perfect”. Over the years, there has been heated, ethical controversy on each of these issues, especially designer babies. How far will we let biotechnological discovery take us? What will come of the world if designer babies become standard procedure? The earliest and maybe simplest use of genetic manipulation was in the selection of the sex of an unborn child. In Vitro Fertilization(IVF - A procedure in which a woman’s eggs are removed from her body, fertilized .....

.... steadily over the last several decades have begun to show improvement. Bay grasses, which perform crucial functions in the ecosystem, have increased throughout the Bay. The oyster and blue crab catch, however, continues to dwindle, and some find fish populations have declined. Species, such as striped bass have increased to the point that they are commercially viable again. The Chesapeake Bay's decline was evident as early as the 1950s. In the late 1970s, state and federal scientists began an extensive study to determine the reasons for the Bay's decline. Three major problems were identified; excess nutrients from wastewater, agricultural lands, and developed .....

.... 1796, Edward Jenner, also studying Smallpox, inoculated an eight year old boy with pus from a diseased cow. The list goes on, and such experiments continue even until today. Nowadays these experiments would be ethically and legally unacceptable. Nevertheless, there have been clear documented cases of abuse in recent times. An example of this is the experiments conducted by Nazi doctors on prisoners in the concentration camps during the Holocaust. Does this mean that since there is potential for abuse, all experimentation should be banned? This would mean that society would be condemned to remain at the same level of knowledge (status quo)? Bioethically speak .....

.... Cu is Copper's chemical symbol. It contains 29 protons/electrons (atomic number) and 35 neutrons. It's atomic weight is 65.39. Copper is an orangy, red metal that is found in ores as a solid form. It can be found in such countries as the United States, Chile, Zambia, Zaire, Peru, and Canada. The most important copper ores are the sulfides, oxides, and carbonates. From these copper is obtained by smelting, leaching, and electrolysis. It's alloys, brass and bronze, long used, are still very important; all American coins are now copper alloys; gun metals also contain copper. The most important compounds are the oxide and the sulfate, blue vitrol; co .....