9.如图为碳元素在生态系统中循环的模式图图中“甲乙丙 表示生态系统的生物成分“箭头 表示生理过程.下列相关叙述中正确的是 A.甲 Template




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tomski9.如图为碳元素在生态系统中循环的模式图图中“甲乙丙 表示生态系统的生物成分“箭头 表示生理过程.下列相关叙述中正确的是 coloring