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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Should we protect the Great Lakes? Why? Why not? If so‚ How? Why is it important that we protect the watershed surrounding the Great Lakes? The Great Lakes hold 90% of North America’s fresh surface water but this water supply is not infinite. As of now‚ both Canada and many states from the US are piped with potable water from the Great Lakes. This leads me to believe that we must protect the Great Lakes. If the Great Lakes are used erroneously‚ both in mishandling of the water and contamination
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The timeless Swan Lake is today prized as one of the world’s greatest and most renowned classical ballets to ever exist. For over one hundred years Swan Lake has been performed‚ adapted and rewritten innumerable times to enthrall a wide range of audiences all across the world. Whilst the foundation of how Swan Lake began and came to be is still‚ to some extent‚ unknown‚ it is widely believed that the production was originally choreographed by Julius Reisinger with the accompaniment of celebrated
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In Elwyn Brooks White’s essay “Once More to the Lake” we learn about a trip‚ that the author took with his son to a lake in Maine. The lake is very sentimental to White because his father brought him to very same lake as a child. During E. B. White’s trip to the lake with his son‚ he is able to compare and contrast what he sees to experiences from his time at the lake. Some of these experiences led White to believe that he was experiencing events from different family member’s lives. This leads
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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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Lake Tahoe is one of America’s deepest‚ freshwater lakes. The iconic vacation spot keeps locals and tourists occupied with ski resorts and casinos. Although‚ there is more to the area than its breathtaking views. The Lake Tahoe Basin is home to many species that contribute to its ecology. Species interaction with biological communities and environment affect the ecosystem greatly because of species dependency of the environment and its resources. This makes it especially difficult with the Lake
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