如图是某生态系统中的物质循环示意衅图中的甲乙丙丁分别代表生物部分其中“乙→丙→丁 为一条食物链请分析回答1图中乙是 者丙 Template




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tomski如图是某生态系统中的物质循环示意衅图中的甲乙丙丁分别代表生物部分其中“乙→丙→丁 为一条食物链请分析回答1图中乙是 者丙 coloring