如图abc及对应面积代表某草原生态系统中的三种生物成分及其在某一年同化的能量.请回答以下问题1三者之间不能建立简单的加和关系是由于 Template




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tomski如图abc及对应面积代表某草原生态系统中的三种生物成分及其在某一年同化的能量.请回答以下问题1三者之间不能建立简单的加和关系是由于 coloring