下图表示生物圈中碳元素的循环过程下列有关叙述正确的是a�过程代表绿色植物的光合作用b图中ab分别代表消费者和生产者c温室效应主要是由 Template




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tomski下图表示生物圈中碳元素的循环过程下列有关叙述正确的是a�过程代表绿色植物的光合作用b图中ab分别代表消费者和生产者c温室效应主要是由 coloring