如图为某生态系统的碳循环示意图其中甲乙丙丁为生态系统的组成部分 Abcd是丙中关系密切的四种生物其生物量所占比例如图所示下 Template




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tomski如图为某生态系统的碳循环示意图其中甲乙丙丁为生态系统的组成部分 abcd是丙中关系密切的四种生物其生物量所占比例如图所示下 coloring