2.初生演替和次生演替的主要区别是 A.影响因素不同 b.起始条件不同 c.产生的植物种群不同 d.产生的生物数量不同——青夏教育精英家教�—— Template




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tomski2.初生演替和次生演替的主要区别是 a.影响因素不同 b.起始条件不同 coloring