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Poland
Poland, officially the Republic of Poland, is a country in Central Europe. Poland has a temperate transitional climate, and its territory traverses the Central European Plain, extending from the Baltic Sea in the north to Sudeten and Carpathian Mountains in the south.
River Basin
The Danube River Basin is Europe's second largest river basin, with a total area of 801,463 km². It is the world's most international river basin, flowing through the territory of 19 countries. The ecosystems of the Danube River Basin are highly valuable in environmental, economic, historical and social terms, but they are subject to increasing pressure and serious threats of pollution from agriculture, industry and cities.