PAPER Topics

... may react with other chemicals in the air. When sulfur dioxide combines with water, the result is sulfuric acid. When nitrogen oxide gas combines with water, the result is also another acid. When the clouds releases rain or other precipitation, the acid goes with it. This is called acid rain. The level of acid is measured in pH levels. The pH scale begins at 0 and ends with 14. A reading lower than 7 is called acidic, and a reading higher than 7 is called basic. Seven is neutral. Normal rain is slightly acidic with a pH level of about 6.5. Rain with a pH of 5.5 is then times more acidic than normal rain and rain with pH of 4.5 is a hundred times more acidic than normal rain. In part ...

... have been found, all in the same region. Apart from the novelty of being such rare fish, have very great zoological importance. First, they are "living fossils"-a life form that has been preserved almost unchanged for many millions of years. As such, they offer the scientist a view of the biology of an earlier stage in the history of life. Second, the group of fishes to which the coelacanth belongs occupies an extremely important place in the vertebrate life. They include the ancestors of all land forms, including man himself. The earliest fossil almost certainly lived in freshwater, but later they entered the oceans. They probably live in quiet deep waters, coming nearer to th ...

... why the star got this name Situla: This name comes from Latin and means "well bucket". Situla was the original Arabic name for the entire constellation Aquarius. There are three star clusters contained in Aquarius. M2, which was discovered in 1764, is one that can be seen with a small telescope. A larger telescope is needed to make out the individual stars. M72 is another cluster that is located southeast of Albali and isn't far from the Saturn Nebula. NGC 7492 is the third cluster and is located east of Skat. Aquarius also has two nebulae in it. It is called the Saturn Nebula because it resembles the rings on Saturn. A very large telescope is needed to see its rings. It was ...

... receptor docking, and/or re-uptake) of serotonin, that disrupts the normal functioning of the nervous system and can lead to various symptoms associated with migraine. The severe pain associated with migraine occurs when the mechanism that normally inhibits and/or mediates pain is disabled. There is no actual tissue damage occuring during a migraine attack. Instead, the pain results from a deranged neurochemistry. Migraine pain is like a loud fire alarm bell ringing when there is no fire. Scientists suspect that a caffeine withdrawal could be the possible cause of common . Why? Well, caffeine is a powerful psychoactive drug that is addictive. Caffeine withdrawals produce all the same symp ...

... get any Geraniums to grow in short and cold growing seasons, like in the Pacific Northwest. It was very easy to grow and pick the beautiful flowers in the south. Wisteria is in the legume family of woody, climbing plants. The best know Wisteria are Chinese, but American are just as good. Most people use them for crawling things to go over doorways and porches. Porches in the south were a very important place of the house. To have really colorful plants meant that it was a very happy place to be on warm summer night looking at all the different flowers. The really cool thing is the vibrant hanging masses of pea-like blue or violet flowers. One downfall of Wisteria is that if you happ ...

... the most important source of energy. Lipids are important because they function as structural components of cell membranes, sources of insulation, and a mean of energy storage. The lipid molecules are most well known as forming basic structures of cell membranes and as energy storage molecules as well. In this group of lipids, there are about three main types: true fats (triglycerides), phospholipids, and steroids. True fats represent the body’s most abundant and concentrated source of usable energy. When they are oxidized, they yield large amounts of energy. They are stored chiefly in fat deposits beneath the skin and around body organs, where they help insulate the body and protect ...

... called this falcon a duck hawk. That was a poor name, since falcons aren't hawks and they rarely kill ducks. The American peregrine was once found all across the eastern United States and southern Canada. In the west, the species was found from Mexico to California. DDT poisoning hit this subspecies the hardest. Even today, naturalists are still working hard to save the American peregrine from extinction. The smaller tundra peregrine (Falco peregrinus tundrius) lives farther north. Tundra peregrines range across the treeless regions of Alaska and Canada. They are also found in Greenland. Peale's peregrine (Falco peregrinus pealei) is the third North American subspecies. This ...

... than sedimentary rock. The cliff at Muriwai made of sedimentary rock was eroded back to expose ‘Fisherman’s Rock’ - the shore platform which, made of limestone – tended to erode back slower than the cliff. The types of wave erosion that caused this are - Hydraulic Action, when waves hit the cliff, air is forced into cracks, and then as the wave retreats this air expands explosively. Over time the cracks enlarge, weakening the base of the cliff causing erosion. Attrition is the breakdown of rock particles when they hit Otakamiro point and each other causing the base of the headland to erode. Chemical Erosion/Corrosion occurs due to the content of limestone ...

... the demand for their services,” says L. Mishel, Research Director of Welfare Reform Network. In view of these facts, I wonder if these trends are good or bad for society. “The danger of the information age is that while in the short run it may be cheaper to replace workers with technology, in the long run it is potentially self-destructive because there will not be enough purchasing power to grow the economy,” M. B. Zuckerman. My feeling is that the trend from unskilled labor to highly technical, skilled labor is a good one! But, political action must be taken to ensure that this societal evolution is beneficial to all of us. “Back in 1970, a high school diploma could still be a tic ...

... of plants and animals. History the history of fungi is not very clear because scientists have never realy wnt in great deepth , because fungi are not needed commericaly. the ancestors of fungi lived in shallow bodies of water about 600-800 million years ago. Some of the things the fungi had to encounter from living out of water was, there was more sunlight that was normally blocked be the water, and the had to do something about the rapid shifts in tempature and seasonal shifts. Fungi are different from other plants in many ways. The general characteristics of fungi are extracellalar digestion, peculiar structures, growth patterns, their use of spores for reproduction, and their l ...