自然界除了水循环和氧循环之外还有一种重要的物质循环 碳循环.以下是有关碳循环的图解图中co2代表二氧化碳h2o代表水.据图回答下列问题 Template




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tomski自然界除了水循环和氧循环之外还有一种重要的物质循环 碳循环.以下是有关碳循环的图解图中co2代表二氧化碳h2o代表水.据图回答下列问题 coloring