Lake Chad: almost gone Straddling the borders of Chad‚ Niger and Cameroon in West Africa‚ Lake Chad has been a source of freshwater for irrigation projects in each of these countries. Maps drawn from a series of satellite images show a dramatic decrease in the size of the lake over the past 30 years. Since 1963‚ the lake has shrunk to nearly a twentieth of its original size‚ due both to climatic changes and to high demands for agricultural water. Since 1963‚ the surface area of Lake Chad has decreased
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Do clean lakes really exist? By Yujia‚ Luo (Group 1) September‚ 2014 Introduction A main purpose of wastewater and sludge treatment is to remove phosphorus (P). It seems to be reasonable because excess phosphorus entering the aquatic systems can result in algal blooms. People have been taking much effort to explore simple‚ economic and high effective methods to remove phosphorus. Concentration of nitrogen (N) is another important element to assess the quality of freshwater. As the same with phosphorus
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Crater Lake Crater Lake is located at southwestern off Highway 62 in Oregon. It is Oregon?s only national park. It is the deepest lake in the United States and is the seventh deepest in the world. Crater Lake has an average diameter of 5.3 miles in length and is approximately 1‚932 feet deep. Crater Lake is a result of a volcanic explosion that happened about 7‚000 years ago. A long time ago‚ the pacific oceanic plate was gradually moving under the pacific continental plate in the process
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Another reason Lake Erie’s water is polluted is due to toxins. First‚ there is a lot of bacteria entering Lake Erie. A few years ago much of Lake Erie was very contaminated with dangerous toxins from algae: “In 2011‚ bright green slime spread across one-third of Lake Erie. The slime was a harmful algal bloom‚ caused by cyanobacteria” (Kowalski 34). As a result of Lake Erie being polluted people must find the issue and resolve it. One theory of the pollution in Lake Erie is that the species are not
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STUDY: LAKE VICTORIA Krystle Baxter University of Phoenix August‚ 2012 Lake Victoria is the second largest fresh water lake in East Africa. Lake Victoria was the home to over 400 cichlids; which today more than half of the population are now extinct. A major destruction of Lake Victoria’s ecological balance was due to the Nile Perch. The Nile perch is a large voracious predator. The Nile Perch was brought to Lake Victoria to help out fisherman but instead the ecological balance of the lake stared
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Lake Granby is located in the Rocky Mountains in what is known as the Middle Park. The climate can be described as subartic due to its low humidity and long winter season. The average low temperature is 21.1 degrees Fahrenheit‚ and the average high is 51.1 degrees Fahrenheit. Precipitation comes mainly in the form of snow‚ with the total amount around 14.2 inches. The town of Granby is the nearest to Lake Granby. The lake itself is right up against the hills of the mountains‚ while the town sits
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Pollution of the Kosciusko Lakes Pollution is one of the many ways that harm is inflicted upon the earth. It comes in two different forms‚ natural and artificial. Each one is equally damaging to the environment and hard to eradicate once introduced into the ecosystem. Natural pollution comes in forms of invasive species (plants and animals)‚ but also can come in forms of run-off. Artificial pollution comes in the form of litter and adds to the harmful effects of the natural pollution. Invasive
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The Battle of Tannenberg and Masurian Lakes The battle of Tannenberg and Masurian Lakes proved to be very important battles. Both General Paul Von Hindenburg and Erich Ludendorff were instrumental in the battle to which they were touted the name “heroes of Tannenberg”. The plan was for the French and British armies to hold the German armies in the west as the Russian armies which were much larger than the Germans could organize themselves. The German commander positioned six of his divisions
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Boyle highlights the muddy characteristics of Greasy Lake through the use of symbolism and repetition in order to portray the main character’s personality and eagerness to fulfill his rebellious motives. Symbolism is one of the prime aspects of this short story that thoroughly demonstrates the lake’s effect on the main character. As described in the beginning of the novel‚ the lake is described as “clear” and is illustrated as a popular scenic spot for individuals to appreciate; just like the main
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The Lake Nyos Limnic Eruption occurred on August 21‚ 1986‚ in Cameroon‚ Africa. It happened 2 years after the Lake Monoun eruption‚ which killed 37 people. Both Lake Nyos and Lake Monoun are crater lakes‚ which means they were created by an eruption around 500 years ago. They are the only volcanic lakes in the world other than Lake Kivu in Rwanda‚ Africa. A limnic eruption is created by a large amount of carbon dioxide being released into the atmosphere. It releases no heat‚ no fire‚ no smoke‚
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