下列实例中属于种内斗争的是a.培养液中生活着两种草履虫 B.人工密植的杨�林长得细高利于争夺阳光c.噬菌体侵入细菌体内 D.鲈鱼的成鱼以鲤鱼 Template




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tomski下列实例中属于种内斗争的是a.培养液中生活着两种草履虫 b.人工密植的杨�林长得细高利于争夺阳光c.噬菌体侵入细菌体内 d.鲈鱼的成鱼以鲤鱼 coloring