... in the Northern Hemisphere. CFC's disperse throughout the stratosphere and breakdown to release chlorine. Chlorine by itself is a very stable compound, but when in the stratosphere it binds to and destroys ozone. This is a cyclic process and therefor means that one chlorine can destroy many ozone molecules (Figure 1.2) During the winter in the Antarctic the circumpolar vortex, which is a strong westerly circulation around the continent, builds in the stratosphere. This phenomenon causes the interior of the stratosphere to be cut off and the temperatures drop below -800C. This results in thin clouds forming and that enables reactions with gases containing ch ...
... tiger population has dropped from 40,000 to 1, 800 in the past ten years, and as few as 1 in every 10,000 tigers is white (www.cranes.org/whitetigers.com). are neither albinos nor a special species; they differ from the normally colored tigers by having blue eyes, a pink nose, and creamy white fur with black stripes. Tiger’s stripes are just like a human fingerprint, meaning that no two tigers have the same pattern of stripes. are not usually born from other . They get their color from double recessive allele. A Bengal tiger with two normal alleles or one normal or white allele is colored orange. Only a double dose of the mutant allele results in , an ...
... Celsius, and it's boiling point is 3000 degrees Celsius. It burns in oxygen forming ferrous oxide. When exposed to moist air, iron becomes corroded, forming a reddish - brown, flaky, hydrated ferric oxide, commonly known as rust. (Encarta, 1996) Iron is formed in shallow seas. It comes out of the water and collects on the sea floor. This creates an underwater deposit. This process occurs over billions of years. Through plate movement the whole sea floor is eventually moved up out of the water. Once out of the water, the iron has formed a land deposit. The biggest iron deposit in the United States is in the Great Lakes. Northern Minnesota is often called ...
... about dyslexia. Seeking help through organizations. What exactly is dyslexia? “The word dyslexia is derived from the Greek “dys” meaning poor or inadequate and “lexis” meaning language. Dyslexia is a learning disability characterized by problems in expressive or receptive, oral or written language”(Wilkins URL). Simply put, dyslexia means trouble with reading, writing, and spelling. Dyslexia is not stupidity, laziness, lack of interest, or anything to be ashamed of. Dyslexia is not a disease; it has no cure and it will not go away. It knows no age, gender, or class boundaries. “There is a significant disproportion between the sexes, how ...
... it had a negative mass, which weren't relevant to his original theories. In the Eighteenth Century Antoine-Laurent Lavoisier, in France, discovered an important detail in the understanding of the chemical reaction combustion of oxygen. He said that combustion was a chemical reaction involving oxygen and another combustible substance, such as wood. John Dalton, in the early Nineteenth Century, discovered the atom. It gave way to the idea that a chemical reaction was actually the rearrangement of groups of atoms called molecules. Dalton also said that the appearance and disappearance of properties meant that the atomic composition gave the appearance of different ...
... 1991). After extensive research, the pathology of BSE was finally determined. Microscopic lesions in the central nervous system that consist of a bilaterally symmetrical, non-inflammatory vacuolation of neuronal perikarya and grey-matter neuropil was the scientists' overall conclusion (Stadthalle, 1993). These lesions are consistent with the diseases of the more common scrapie family. Without further investigation, the conclusion was made that BSE was a new member of the scrapie family (Westgarth, 1994). Transmission of BSE is rather common throughout the cattle industry. After the incubation period of one to two years, experimental transmission was found p ...
... Sea water doesn't just contain hydrogen, oxygen, sodium, and chlorine; it also contains every naturally occurring element. Although seawater has a fairly constant ratio of major elements, salinity and seawater can fluctuate. Normally, the salinity is thirty-four to thirty-seven parts per thousand (ppt.), but on a particularly rainy morning, the salinity may decrease to something as low as thirty-two ppt. (Stuller 29). The mixing of freshwater and sea water forms a third type of water, known as brackish water. Brackish water can be found in a variety of mixing zones such as river deltas, freshwater title marshes, estuaries, fjords, and in the middle of the ...
... talks about astronomers in the mid 1800's, and how they made the spectroscope. Only then does he start to mention a element a french chemist belived to be new or maybe just a heavier from of nitrogen. Inert gases and there liquefaction points are then listed along when they when fisrt liquefied by a chemist. Welcome, Stranger! This talks about the rarest of stable enert gases, xenon. It also tells why that in 1962 so many expirements were done involving this gas. Fisrt it defines the word gas, and talks about different types in about four pages. Thens he talks about how it is combined with flourine to form a poison. Death in the Labratory Here A ...
... think of another topic that fit into e veryone's lives and had an effect on everyone. The hurricane year is broken up into two seasons. They are referred to as early season and late season. The early season starts June first and runs to September 10. The late season starts on September 10 and runs to the end of November. The date of September 10 is the midway point between the two seasons. This is the date that separates early season from late season. This leads me to what my research was about. I am writing about the differences between early season and late season hurricanes and how they effect the variable that were mentioned earlier in the paper. I feel ...
... the manufacture of very many expensive alloys. Cobalt-iron alloys have very unique and special magnetic properties. For example, Hyperco is used as the nucleus in strong electromagnets. Alloys containing titanium, aluminum, cobalt and nickel can be made to become permanently magnetic. One alloy, called Stellite, is an alloy of cobalt, chromium, tungsten, and molybdenum. This alloy is extremely hard and keeps its hardness at extreme temperatures. It has many uses: cutting tools are made of it along with gas turbines. Zaire is the world¹s largest producer of cobalt with 65% of the world¹s reserve. Cobalt is a common trace element found in food. It is a comp ...
