某同学决定以校园内池塘为对象进行物种丰富度调查为此他设计了右图所示的取样器取样后分别统计小取样瓶中的小动物种类和数量该同学调查的目的不 Template




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tomski某同学决定以校园内池塘为对象进行物种丰富度调查为此他设计了右图所示的取样器取样后分别统计小取样瓶中的小动物种类和数量该同学调查的目的不 coloring