两栖动物的种类和数量减少的原因是_刷题宝

题干

两栖动物的种类和数量减少的原因是（　　）

A：环境污染

B：水域面积缩减

C：乱捕滥杀

D：以上三项都是

上一题下一题 0.0难度选择题更新时间:2014-04-29 01:31:10

答案(点此获取答案解析）

D

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