下图a为碳循环示意图图b为食物�请据图回答 1碳在生物群落内以 的形式进行流动2碳从无机环境进入生物群落的途径�是 作用3 Template




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tomski下图a为碳循环示意图图b为食物�请据图回答 1碳在生物群落内以 的形式进行流动2碳从无机环境进入生物群落的途径�是 coloring