下列关于种群特征的说法中正确的是 A.种群密度能反映种群在一定时期的数量和数量变化趋势 b.出生率越高种群数量增长越快 c.年龄组成能够 Template


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tomski下列关于种群特征的说法中正确的是 a.种群密度能反映种群在一定时期的数量和数量变化趋势 b.出生率越高种群数量增长越快 coloring