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
扫描二维码，直接登录
然后those表示的是individuals；注意此处[不能用that]，因为是individuals复数！！
登录 或 注册 后可以参加讨论