.... able to eliminate bacteria without doing much harm to the cells of treated individuals. Yet with each passing decade, bacteria that defy not only single but multiple antibiotics -- and therefore are extremely difficult to control -- have become increasingly common. What is more, strains of at least three bacterial species capable of causing life-threatening illnesses (Enterococcus faecalis, Mycobacterium tuberculosis and Pseudomonas aeruginosa) already evade every antibiotic in the clinician's stockpile of more than 100 drugs. In part because of the rise in resistance to antibiotics, the dea .....

.... pea plants proved there was a way of artificially creating trends in color of flowers. This discovery led to modern genetics. We now know chromosomes carry valuable information that determines characteristics in living species. When you put these two discoveries together you really understand how animals have evolved to their currant state. When animals are born the have traits that help them live or inhibit their ability to live. If the die they cannot mate with other animals therefore they don’t pass on the traits that killed them. The animals that live pass on the chromosomes tha .....

.... level is depressed to zero, all fish in the lake die. Any decomposition that does not contain oxygen starts to generate noxious gases such as Hydrogen Sulfide. Pulp and paper mills, and municipal sewage causes BOD. Nutrients: Nutrients, particularly nitrogen and phosphorus, enrich waters and accelerate the aging of lakes and streams. Also, the result of this is rich plant life which prohibits recreational activities. Plankton blooms depress oxygen levels (as mentioned before) and therefore, endanger living organisms. Major sources of nutrients are municipal sewage and agricultural runof .....

.... p.27 ). If enough of these man - made chemicals are released, "the ozone layer would be weakened to such an extent that it does not filter out the sun's invisible and dangerous ultraviolet rays " ( Jones, 1992, p.36 ). Such a scenario would drastically alter society and the environment. Ozone depletion has been described as "potential catastrophe " and " a planetary time - bomb " ( Way, 1988, p.9 ). The four main areas affected by a depleted ozone layer and thus by the corresponding increase in harmful ultraviolet radiation are agriculture, wildlife, the environment, and human health. A de .....

.... as the endless, bottomless pit it was considered to be in medieval times.”(Heyerdahl) The majority of the world's population still lives under the misconception that the ocean is a hungry abyss, eager to devour all their waste. These beliefs, however, are all untrue. The average depth of the oceans is only a little more than a mile, when in fact, some lakes exceed this depth rather handily. Although the size of the ocean is often pondered, the thought that it may one day be gone, is never even considered. The vast majority of all life in the ocean, inhabits only 1/25 of these wat .....

.... So3 in the damp atmosphere is assumed to be the lead to the formation of sulfuric acid. Phase two: the aqueous phase, sulfur dioxide occurs as three species. [S {iv}] [So2{aq}]+[+1S03-] +[So32-] This process occurs by a twofold process. 1) So2 (aq) H++H S o3- 2)H so3-(aq ) h++ So32- The establishment of the equilibrium is dependent upon such things as ph. , droplet size, "sticking coefficient" for So2 on water, etc. What was being done to prevent acid rain was the 1995 implementation of phase one of the clean air act amendment of 1990. Authors say that it has cleaned up a lot .....

.... collisions that immediately following the formation of our planet. The bulb had a heating unit under it to stimulate evaporation, then there was a smaller bulb that contained electrodes, simulating lightning and other static discharges, the evaporated water and gasses rose into this electrified bulb and were occasionally energized. The vapor then flowed into a condenser, and finally back into the simulated seas. The project was extremely simple, yet the results in a matter of weeks, was astonishing. The liquid turned the color of tea, and a black film formed on the inside of the “ocea .....

.... can be placed any time of the day. also allows companies to have much larger markets, once you are on the Internet you are everywhere. A customer in Japan can buy exactly what a customer in the UK buys from the same electronic store. The capability to purchase products at ease from all over the world would eventually result in the weakening of international boundaries and increased trade between countries. For example when the machinery for one of General Electric's light-bulb factories broke down, GE would invite bids from four domestic suppliers. With the help of the Internet General Ele .....

.... development. The more the mother drinks the greater the risk of damage to the baby. "The Syndrome occurs in anywhere from point five to three live births per thousand in western countries…It is estimated that between thirty and forty percent of all woman who drink heavily during pregnancy will have a child afflicted with Fetal Alcohol Syndrome…Fetal Alcohol Syndrome outranks Down's Syndrome in prevalence and is the leading case of mental retardation" (Britanica 1). Once the damage is done it cannot be undone. Babies who are born with Fetal Alcohol Syndrome suffer symptoms that .....

.... or book about begins with a statement similar to the one above. People who have genetic disorders are born with them. The inherited genetic defect causes a chemical error in all the cells in their body (Silverstein, 1994; Wagner, Reynolds, Moran, Moss, Wine, Flotte, Gardner, 998; Shapiro, 1991; Drake, 1995). In children and adults with CF, a mistake in a single gene disables a type of protein that functions as an ion channel. This molecule regulates the balance of salts in a special type of cell that lines many of the body's glands (Hopkin, 1998). All people with genetic disorders have inh .....