据报道，汉江流域再次发生“水华”现象，江面上有大量绿色漂浮物，类似于海面上的“红潮”，取水样分析：绿藻含量比正常情况下偏高很多，含氧量明显偏低，浑浊度增加。造成汉江“水华”最可能的原因是(　　)_刷题宝

题干

据报道，汉江流域再次发生“水华”现象，江面上有大量绿色漂浮物，类似于海面上的“红潮”，取水样分析：绿藻含量比正常情况下偏高很多，含氧量明显偏低，浑浊度增加。造成汉江“水华”最可能的原因是(　　)

A：水土流失

B：有毒的废水大量排入汉江

C：生活废水大量排入汉江，使水质富营养化

D：汉江流域农业生产中长期使用农药

上一题下一题 0.0难度选择题更新时间:2014-07-14 07:43:05

答案(点此获取答案解析）

C

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