.... behind after the explosion is a NEUTRON STAR--a star only a few kilometers in diameter having an enormously large density and consisting mainly of neutrons--or a PULSAR, a pulsating neutron star. There are two common types of supernovas, called type I and type II. Type I occurs among old stars of small mass, whereas type II occurs among very young stars of large mass. It is not known how a small-mass star can release the very large amounts of energy needed to explain type I supernovas. Scientists generally believe that this must involve binary systems--two stars revolving around each other. In such a system one of the sta .....

.... to die. However by 1976 local inspectors were noticing that many of the lakes were beginning to show signs of death. Fish were found dead along the banks of many rivers. As the winters ice began to melt off more and more hundreds upon hundreds more dead fish were being found. As scientists continued to work they found many piles of dead fish, up to 5000 in one pile, further up the river. Divers were sent in to examine the bottom of the rivers. where they found many more dead fish. Many live and dead specimens were taken back to labs across Norway. When the live specimens were examined they were found to have very little sodium in .....

.... proinsulin. The genetic coding for human proinsulin is inserted into the special E. coli bacteria which are then grown in a fermentation process to produce human proinsulin. With genetic engineering, new proteins are synthesized. They can be introduced into plants or animal genomes, producing a new type of disease resistant plants, capable of living in inhospitable environments. When introduced into bacteria, these proteins have also produced new antibiotics and useful drugs. Techniques of cloning generate large quantities of pure human proteins, which are used to treat diseases like diabetes. In the future, a resource bank f .....

.... which will form two new embryos (Lawren). For it to get started into practice it took more than fifty years of questioning and testing. The first successful cloning experiment involved a leopard frog. It took place in, 1952 with group of scientist from the Institute for Cancer Research in Philadelphia (Lawren). To clone the frog they used an embryonic frog cell nucleus(Margery). 1962, John Gurdon of Cambridge University cloned a toad that survive threw adulthood and was able to reproduce. He was also the first to take a nucleus from a fully contrast tadpole intestinal cell and cloned toads(Robertson). As you can see we .....

.... quality. The Government also set up programmes which would help these aims to be met, such as the Urban Development Corporations (e.g. LDDC London Docklands Development Corporation) and the availability of grants for urban development. The inner cities had many problems all of which linked together to form a less affluent area which was very hard to improve as to help with one problem often meant having to solve another one too. Housing in inner city areas was poor quality and in a 1991 census it was found that over 1 million homes in the inner cities still lacked the basic amenities of bathrooms, WC’s and hot water. Th .....

.... system in 1977. It demonstrated networking through various mediums, including satellite, radio, telephone, ethernet, etc. using packet switching. And this formed the roots of the Transmission Control Protocol and Internet Protocol (TCP/IP). But it was not until 1983 that all nodes on ARPANET were required to use TCP/IP to connect to it. Also in 1983, the Department of Defense moved the unclassified portions of the Data Defense Network to create MILLET. Then in January 1983, the ARPA Internet first appears and operation was passed to the Defense Communications Agency. The first operating, non-experimental, real live Int .....

.... the early years of the Space Race, success was marked by headline-making, historical "firsts." Some of these firsts included the first satellite, the first robotic spacecraft to the Moon, the first man in space, the first woman in space, and the first spacewalk. To the chagrin of the United States, each of these early firsts were achieved by the Soviet Union, thus sparking the United States to not only catch up with the Soviets, but also to surpass them. (Alexander 37-39). The Soviet Union stunned the world with the launch of the Sputnik "satellite" on October 4, 1957. Sputnik was a shiny basketball-size sphere c .....

.... atom is mostly empty space and that the distance between electrons and the nucleus is vast compared to the size of the nucleus itself. In 1919, he discovered the "artificial disintegration" of nitrogen. His experiments show that under alpha radiation, nitrogen is decomposed and hydrogen is formed. Rutherford also devised an electrical method for counting the number of alpha particles emitted from radioactive substances. Using this method, he measured the number of alpha particles expelled per second from one gram of radium to be 34000. Before Rutherford, the smallest particle of matter was represented as a solid ball. Rutherford .....

.... the enzyme rate inside the body will go into sharp decline. This is because enzymes are proteins, and become denatured. One of the first organs to be affected is the brain. Since the brain controls breathing and the circulation, the rise in body temperature disrupts the normal functioning of these important systems. If the body temperature decreases dramatically (hypothermia) then this will slow metabolic activity and impairs brain function. Here is a graph to show the relationship between the body temperature and environmental temperature for a cat (endotherm) and a lizard (ectotherm) Also we need to clarify wha .....

.... by forty to fifty percent without the use of on our crops. The FDA, EPA, and the Department of Agriculture try to ensure that the use of is necessary to the extent in which they actually are used by performing studies and proposing bills and laws to Congress. There is no dispute that are harmful. The purpose of is to kill certain fungi, plants, and even animals, so it seems only natural that they would have some effect on humans as well. An example of how these societies have helped to try and lessen the use of the more harmful is the Pesticide Food Safety Act of 1993. This bill is to try and be sure that the food people .....