.... southern regions that are near the Great Lakes, such substances as limestone or other known antacids can neutralize acids entering the body of water thereby protecting it. However, large areas of Ontario that are near the Pre-Cambrian Shield, with quartzite or granite based geology and little top soil, there is not enough buffering capacity to neutralize even small amounts of acid falling on the soil and the lakes. Therefore over time, the basic environment shifts from an alkaline to a acidic one. This is why many lakes in the Muskoka, Haliburton, Algonquin, Parry Sound and Manitoulin districts could lose their fisheries if sulphur .....

.... diagnosis may not be completely accurate because there is still as of yet no definitive way to test for , only the doctor’s interpretation of the symptoms. In the United States approximately three thousand patients will be hospitalized for every year. Even with the amount of cases and the time being spent into investigating and treating the disease there are still many unanswered questions. The highest incidence of is found in Japan. The chance of in Japanese children under the age of five is approximately one tenth of a percent. The incidence in North American children under the age of five is ten times lower, about one o .....

.... condition would happen to be modified? Most crystals are formed under water or under liquids with similar characters to water; and tend to form under liquids or solutions containing a maximum amount of solute. If the liquid absorbs additional solute, then the solution is supersaturated. If a tiny crystal, called a seed crystal, is added to the substance, a chain reaction would occur where the crystal growth will grow dramatically. In the case of the experiment, a staple is used instead of a crystal so that the crystal can be easily removed at the end of the experiment. One may wonder, if a certain characteristic of the solution .....

.... already very large. Detecting an acid lake is often quite difficult. A lake does not become acid over night. It happens over a period of many years, some times decades. The changes are usually to gradual for them to be noticed early. At the beginning of the 20th century most rivers/lakes like the river Tovdal in Norway had not yet begun to die. However by 1926 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 (trout in particular) were being found. I .....

.... are able to recognize individuals and navigate the rocky terrain on which they live quite well. Long of body and short of leg, they probably poke their heads forward as an aid to balance. And as for looking at the ground, they're merely-like us-keeping an eye on where they're going. The human eye is adapted for aerial vision, which is why scuba divers-or even you and I in the local swimming pool-must wear goggles or a face mask to re-introduce air in front of our eyes in order to see clearly. Among vertebrates in general, the bird eye is frequently described as the most efficient. Its superior quality, combined with the f .....

.... a complement inhibitor was developed as the gene was cloned, introduced into pigs whose cells produced this protein. Another thing discovered, was that the cells lining the pig vessels have a sugar molecules called alpha-galactose, and humans have lots of antibodies against alpha-gal. Some are thinking of knocking out the gene for alpha-gal and replacing it with the human gene for type O blood sugar. One other stumbling block may be the transferense of unknown virus's like the HIV virus, that was somehow transmitted from monkeys. Scientists are hoping that most virus's will not be viable in humans. Tissue engineering is a promisi .....

.... matter is made up of very tiny particles called atoms. Atoms are made up of even smaller substances called subatomic particles. Scientific studies have found that some of these subatomic particles are charged with electricity. The electric charges are made up of two kinds - positive and negative. The positively charged particles are called protons, and the particles with negative charges are called electrons. In an atom, the protons are located in the center, or nucleus, and the electrons revolve in a series of orbits around the nucleus. All electric charges are caused by the combined effects of proton and electron ch .....

.... in damage to buildings, communications systems, power lines, and electrical systems are also the result of . Finally, the threat of causes many work stoppages and lost production increasing the time and cost required to prepare NASA spacecraft for flight. Benjamin Franklin performed the first systematic, scientific study of during the second half of the 18th century. Prior to that time, electrical science had developed to the point where positive and negative charges could be separated. Electrical machines could, by rubbing together two different materials, store the charges in primitive capacitors called Leyden Jars from w .....

.... events greatly exceeding normal human expectations in terms of their magnitude or frequency and causing significant damage to man and his works with possible loss of life.” (Heathcote,1979,p.3.). A natural hazard occurs when there is an interaction between a system of human resource management and extreme or rare natural phenomena (Chapman,1994). As McCall, Laming and Scott (1991) argue, strictly speaking there is no hazard unless humans are affected in some way. Yet the line between natural and human-made hazards is a finely drawn one and usually overlapping. Doornkamp ( cited in McCall et al, 1992) argues that many hazards .....

.... pressure, respiratory failure, seizure disorders, and shock can occur. SIGNS AND SYMPTOMS Mild cases absent superficial reflexes Sudden fever *** exaggerated deep tendon reflexes Poor appetite opisthotnos Loss of energy nuchal rigidity General sick feeling increases resp. tract problems Severe Cases High fever sore throat Severe HA *** malaise N/V *** muscle stiffness Stiff neck *** photophobia Pupils of different sizes visual disturbances Confusion tremors Disorientation spastic or flaccid paralysis Personality changes irritability Conv .....