.... of chlorine, it would continue to burn, releasing dense, black clouds of smoke, The chlorine combines with hydrogen of the paraffin, forming hydrogen chloride, and uncombined carbon is left in the form of soot. Soot is black residue from fuel. Chlorine replaces iodine and bromine from their salts. Dry chlorine is somewhat inert or not able to move, but moist chlorine unites directly with most of the elements. History Chlorine was discovered in 1774 by Karl Scheele. Humphry Davy proved that chlorine was an element. Extensive production began 100 years later. During the 20th Century. The amount of Chlorine used was consid .....

.... and hence the growth and development of the organism. So all living things on plant Earth contains the genetic material DNA and the structure of a DNA molecule or combination of DNA molecules determines the shape, form, and function of the offspring. 2)The term "genetic technology"(or genetic engineering) is the modification of the genetic properties of an organism by the use of recombinant DNA technology. By using this technology it is possible to alert characteristics of living organisms in specific ways. The chemical languages of DNA in all living thing are the same so it is possible to take one gene from one liv .....

.... feed on dying material and convert it back into basic substances.Without decomposition the food chain would cease.Bacteria also helps in the breakdown on rocks which influences the movement of key elements,such as,sulfur,iron,phosphorus,and carbon,around the world.Bacteria are the main digesters of cellulose within cows and other animals.Bacteria are used in the making of dairy products.Without bacteria the dairy industry would not exist.Bacteria are also helpful in sewage treatment.These certain bacterias convert the organic materials of sewage into carbon dioxide,methane,and hydrogen gases.Bacteria is involved in nearly every fam .....

.... time. An accident at a nuclear power plant has the potential to be much more harmful than an accident at a coal or gas plant because of the radiation that could be released. An example of this is Three Mile Island in Pennsylvania where there was a partial core meltdown in march of 1979 caused large amounts of radiation to be released into the atmosphere. Accidents involving US nuclear power plants are very rare. This does not mean that they do not occur. In the early 1980's there was a fire at Yankee Atomic, a nuclear power plant in Massachusetts, destroying over 3 million dollars worth of electrical wiring in the reactor. I .....

.... pray. It is also a good bedding source. The s cubs love to romp around in the grass for play and for practice for battle when they get older. This is the best all-round plant and helpful one for the . The up close, the is one of the smaller "big" cats. The largest weighs no more than 143 pounds and is probably 3.3 feet long from the shoulder to the root of its long tail. Females are usually slightly smaller than males. The outstanding feature of the 's appearance is, of course, its beautiful spotted coat. The most distinctive features of the 's face are the dark "tear lines" running down from its eyes along both sides of its .....

.... "heavy rains might have helped the red tides develop by pouring fresh water and nutrients into surrounding sea waters," (New York Times: Sept. 19, 1996) Fast growing algae quickly strip away nutrients in the upper layer, leaving nitrogen and phosphorus only below the interface of the layers, called the pycnocline. Many swim at speeds of 10 meters a day, and some go through vertical migration rising to the top of the water to get sun and then swimming down to the pycnocline to take up nutrients at night. Another cause of red tides is from human pollution. "nutrient runoff from human development, the heavy use of fertilizer .....

.... simpler and faster to perform and could be available to all pregnant women who wish to take advantage of the technology. Current prenatal testing involves growing fetal cells in vitro and examining them, over one or two months, to see if there are two copies of a particular chromosome, which is normal, or one or three, which is abnormal. A test using Willard's probes would require only a few cells and a few days to detect abnormalities. "I don't think it's beyond the realm of possibility that these kinds of tests could eventually be done by an obstetrician in the office during the early stages of pregnancy," he adds. The deter .....

.... birds were added. The chicks were released into the wild and the program continued. Though there are several dozen nenes released from captivity, there is still little increase in the wild population. The inbreeding between birds is not allowing for any genetic diversity to occur between them. It is also causing captive-bred birds to lay eggs that don't produce chicks. Scientists collect blood samples from nenes in the area, searching for a descendant of the wild nenes. The blood is then sent to a DNA lab for fingerprinting. It shows that the captive breeding is actually harming the bird population. As expected, today's nenes ha .....

.... orientation on the benzene ring, which allowed for rod-like molecular structures. This technology was used when Du Pont released aramid fiber in 1971. What is it? Kevlar is an aramid, a term invented as an abbreviation for aromatic polyamide. The chemical composition of Kevlar is poly para-phenyleneterephthalamide, and it is more properly known as a para-aramid. Aramids belong to the family of nylons. Common nylons, such as nylon 6, do not have very good structural properties, so the para-aramid distinction is important. The aramid ring gives Kevlar thermal stability, while the para structure gives it high strength and modulus .....

.... and subartic regions throughout the world, except for Southern Africa. The sea lamprey is a marine species. They are native to the Atlantic Coast of North America and Europe. In many areas it has adapted to a life cycle spent entirely in freshwater. The sea lamprey invaded Lake Erie in the 1920’s, where its warm water was good for reproduction. They migrated to Lake Huron in 1939 and then to Lake Michigan. Within a few years, the lamprey had severely damaged the valuable trout fish in these lakes. They were competing with the fishing industry for the available trout. After invading Lake Superior, the lamprey became a se .....