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1只雌蛙能产4000粒——5000粒卵,卵受精后只有不足10%的发育成为成体,按照达尔文的观点解释,造成这种现象的主要原因是()

发布日期:2022-07-14

1只雌蛙能产4000粒——5000粒卵,卵受精后只有不足10%的发育成为成体,按照达尔文的观点解释,...
A

过度繁殖

B

生存斗争

C

遗传变异

D

适者生存

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中学教师资格证

初中教师专业知识

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