某河流生态系统的营养结构共有4个营养级分别以abcd表示一年内输入这4个营养级的能量数值如下表该生态系统中初级消费者所属的营养级是 Template




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tomski某河流生态系统的营养结构共有4个营养级分别以abcd表示一年内输入这4个营养级的能量数值如下表该生态系统中初级消费者所属的营养级是 coloring