下列关于自然选择学说对生物进化的解释其中是生物进化的结果是 a生物进化的内因是生物能产生各种变异 b生物进化的外因是生物生存的各种环境 Template




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tomski下列关于自然选择学说对生物进化的解释其中是生物进化的结果是 a生物进化的内因是生物能产生各种变异 b生物进化的外因是生物生存的各种环境 coloring