某生物研究性学习小组在对沂山某地域内的动植物种类进行调查后绘制了如下食物关系图.请据图回答1若要构成一个生态系统还需增加的成分有 Template




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tomski某生物研究性学习小组在对沂山某地域内的动植物种类进行调查后绘制了如下食物关系图.请据图回答1若要构成一个生态系统还需增加的成分有 coloring