下图表示种群的各个特征之间的关系下列叙述正确的是 A.甲为出生率和死亡率乙为迁入率和迁出率b.丙为性别比例主要通过影响出生率来间接 Template




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tomski下图表示种群的各个特征之间的关系下列叙述正确的是 a.甲为出生率和死亡率乙为迁入率和迁出率b.丙为性别比例主要通过影响出生率来间接 coloring