1近日科学家们表示,墨西哥湾的一个海洋“死亡区”的面积已达美国康涅狄格州大小。这片死亡区方圆13000平方千米,是世界上第二大的死亡区。这片海域因海底没有氧气致使鱼虾无法生存而得名。这种现象的主要成因是由于20世纪60年代,密西西比河岸农业土地面积的不断扩大导致污染加剧,过量营养物质从密西西比 Recently, scientists said that the area of ​​a “dead zone” in the Gulf of Mexico has reached the size of the state of Connecticut in the United States. This area of ​​13,000 square kilometers of death zone is the world’s second largest death zone. The sea is named for its inability to survive because there is no oxygen in the sea floor. The main cause of this phenomenon is due to the increasing pollution of the area of ​​agricultural land in the Mississippi River bank in the 1960s, excess nutrients from the Mississippi