 In this town, the aquatic animals inhabited show that the rivers become clearer ! Since 1996, this local community has been doing various activities to clean the rivers running in their town. |
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 These rivers are covered with concrete walls and look not clean. But some freshwater clams, which are classified as "less polluted", inhabit the rivers. If you take care there a little more, you will get more aquatic animals classified "clean". |
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