某动物种群的年龄结构组成图的基部比较狭窄而顶部较宽卜.列哪个特征是错误的 A.这是一个下降型的种群 b.幼体比例较大而老年个体比例较小 C Template




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tomski某动物种群的年龄结构组成图的基部比较狭窄而顶部较宽卜.列哪个特征是错误的 a.这是一个下降型的种群 b.幼体比例较大而老年个体比例较小 coloring