As Charles Darwin observed, natural selection operates whenever individuals of one genetic composition are better at reproducing than that of others.
that of others
the other
another
those of another
that of the next
登录 或 注册 后可以参加讨论
(b) and (c) are wrong because "other"/"another" refers to another genetic composition 比较是individuals
扫描二维码，直接登录
(b) and (c) are wrong because "other"/"another" refers to another genetic composition 比较是individuals
登录 或 注册 后可以参加讨论