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美國缺水因果圖, 硫化物, 汽機車每年排放820萬噸的氮氧化物 - Coggle Diagram

- - - - 影響兩千五百萬人
        
        改用省水馬桶、洗衣機
        
        30年來用水量最低
- - - - nitrogen
        
        fertilizers pollution
        
        Wash into Mississippi River
        
        7000 square mile dead zone
      - phosphorus
    - - leaks mtbe
        
        factory pollution
        
        cause cancer when consumed
- - - - 有毒物與降雨結合
        
        形成酸雨
        
        造成植動物死亡
- - - - 下游阿拉馬州與佛羅里達州人民缺水
        
        兩周人民告上法院
- - - - winter precipitation
        
        snow melts fast
        
        falls as rain
        
        water runs into waterway once
        
        no water
        
        rainless summers
        
        dry months
        
        water shortage