PAPER Topics

... CFCs (chloroflurocarbons) used in air- conditioners and refrigerators are breaking it down. This is the ozone thinning theory: "CFCs release chlorine into the stratosphere... leading to ozone destruction and exposing the planet to harmful ultraviolet rays." Critics who discount the thinning theory still say that chlorine comes from natural sources like volcanic eruptions and does no permanent damage (Brooks 422). NASA researches claim that they have evidence that shows CFCs are to blame for ozone depletion. Natural chlorine is only about 1/5 of the chlorine in the stratosphere because most of it dissolves in the rain water before it reaches the ozone (Brooks 422). Oceans and volcanoes ...

... most ultraviolet light. Ozone prevents most UV-B radiation from reaching the surface of the earth (Environment Canada, 1996). Ozone is very important to life on earth because the harmfulness of high-energy UV-B radiation stems from the high energy of these light rays, enabling them to penetrate deeply into water, plant tissue and epidermal tissue of animals. Increased UV-B radiation results in harming the metabolic system of cells and ultimately damage to genetic material present in effected cells. Living organisms on the surface of the earth have always been exposed to some, and only slightly differing levels of UV-B radiation depending of geographic location and season. Through evolut ...

... the mystery of man’s and the universe’s origins. A very highly debated topic within the bigger argument is, “What started it all?” Creationists believe that God merely spoke all that we know into existence, but evolutionists prefer to believe a massive, random explosion spawned the cosmos. Obviously, a middle-grounder could find both preposterous. The very first line of the Holy Bible states, “In the beginning, God created the heavens and the earth.” For such a massive, random occurrence on the evolution side is quite hard for one to fathom, but for a massive, controlled occurrence to take place would be quite another thing all together. So, it would be very possible that God create ...

... line in the Alps. They are also found in other parts of the world from Ethiopia to Ecuador, from California to Israel. Where eucalypts grow is determined by many environmental factors such as soil type, amount of water, wind direction, the direction the tree is facing and whether there is frost. THE IMPORTANCE OF THE EUCALYPT Eucalypt oil is used for cough and colds. The oil is either rubbed on the chest or sniffed up in steam. It is also used in cleansers where strong smells need to be covered up. The taste and smell of eucalypts can be found in sweets. Insects are prevented from chewing the leaves because of the strong smell of the leaves. It is the number of species of eucalyp ...

... oxygen forcing fish to go deeper or venture elsewhere. Due to a lack of data during occurrences it is not fully known if fish populations are depleted solely due to exposure to . A decrease in their growth and reproductive success has been observed by many surveys in coastal waters. The link between climatic effects around the world and is now well established. It has taken many years of studying to understand how the pieces of the puzzle, from ocean currents to winds and heavy rains fit together. During the 1920s a scientist was on assignment in India trying to predict the Asian monsoons. As he sorted through his records he discovered a connection between barometer read ...

... include sorbitol (glucitol) from glucose and mannitol from mannose; both are used as sweetening agents. Glycosides derived from are widespread in nature, especially in plants. Amino sugars (i.e., sugars in which one or two hydroxyl groups are replaced with an amino group, -NH2) occur as components of glycolipids and in the chitin of arthropods. carbohydrateClasses of carbohydrates Sources The most common naturally occurring are D-glucose, D-mannose, D-fructose, and D-galactose among the hexoses, and D-xylose and L-arabinose among the pentoses. In a special sense, D-ribose and 2-deoxy-D-ribose are ubiquitous because they form the carbohydrate component of ribonucleic acid ...

... a part of us, part of the Great Spirit, changed them in a horrible way, so no one can recognize them" (Erodes 209). On the other hand, conservatives frequently label environmentalists as extremists who despise almost all of capitalism's practices regarding ecology. That is, some extremist defenders of the profit motive name call, terming environmentalists "vandals" (Huber2 1) who prefer "forests over jobs" (Huber2 1) that the industrial age provides. Clearly, the issue has been politicized. Nonetheless, no one can deny that the earth, while not on the brink of annihilation, has been polluted and our air contaminated by the inroads created by the mechanized era. Furthermore, no carin ...

... moving, very fragile object in space. One small thrust of a poorly aligned engine could cost one of four space-worthy shuttles and the world's first and only long-term space station. Docking was over with soon, and was followed by the cosmonauts of Mir greeting the astronauts of Atlantis. Gifts of flowers, candy and fruit were given by the Americans, who in return, following a Russian tradition, received gifts of bread and salt. Knowing the importance of the mission, the Russians, as well as the Americans, forced the good nature of the mission to be seen. After an exchange in the crew of Mir, Atlantis disengaged the docking clamps, and returned home. This mission was important to the ...

... we as individuals make little difference, as if history and the future just happen at us. Obscure plans, which have guided people forward in the past, have now rendered themselves useless. There are no known maps to show pathways into the future. We’ll need to consider back to our hearts, common sense and basic human capabilities. We’ll need to consider the deep issues at stake and make deep choices about them. This idea of disaster is actually an aide. It activates resourceful survival instincts. The human race needs to change course. There are so many causes of large-scale disaster that it would need whole libraries to contain it. While there is no way of knowing whe ...

... few things. Deforestation, fertilizer use and fuel combustion are minor contributors to this problem while chemicals such as chloroflourocarbons (CFCs), halons, carbon tetrachloride, methyl chloroform, methyl bromide and hydrochloroflourocarbons (HCFCs) are the major contributors to the deterioration of the ozone layer. These chemicals have industrial halocarbons that break up into chlorine and bromine in the upper stratosphere when they react with the sun's rays. Chlorine eats up the ozone layer while bromine acts as a catalyst and speeds up the process. Often found in Antarctica, there are frozen chemical clouds in the upper stratosphere called polar stratospheric clouds. These pol ...