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Oslo is aware of these problems as well, so they've established "Urban Ecology Program" or "ecology" is the basic principle that "to maintain the green of the forest (Green) and blue (Blue) in a fjord." the result is that the Aker River (a river that flows through the city to the West, South and affecting the environment of the fjord) Therapy and improve the quality of water is seriously by creating a wastewater treatment plant. Currently, nationals of Oslo, so you can see salmon swimming Lance water comfortably emotions.
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