2. sewage from agriculture.In cultivation. Farmers are using more and more chemicals, such as chemical fertilizer, pest elimination, in which some "difficult. The substance may be stranded on vegetables, fruits, causing harm to consumers, and some scattered along the ground. When it rains water will wash down the river being one of these canals. Fish, shrimp, crab, and other shellfish aquaculture is deadly dangerous. If the fish get some chemicals in quantities, may accumulate in the animals. When people catch these fish Cook The chemicals are accumulated in the body of the other one.
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