如图所示甲乙为某种生物种群的年龄组成曲线如不考�其他因素种群甲和种群乙未来个体数量的�展趋势是 A衰退型和增长型 b增长型和 Template




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tomski如图所示甲乙为某种生物种群的年龄组成曲线如不考�其他因素种群甲和种群乙未来个体数量的�展趋势是 a衰退型和增长型 b增长型和 coloring