对于一个处于平衡状态的生态系统来说下列现象中不可能存在的是 A物质不断循环b能量不断流动c组成成分相对稳定d生物个体数量不变 Template




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tomski对于一个处于平衡状态的生态系统来说下列现象中不可能存在的是 a物质不断循环b能量不断流动c组成成分相对稳定d生物个体数量不变 coloring