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- Why should it prevail against natural selection? 它为什么要阻止自然选择呢?
- Can natural selection explain human personality? 物竞天择是否能解释人的性格?
- Natural selection is a very grim natural reaper. 自然选择是自然界的冷酷收割机。
- Nature grants long periods of time for the work of natural selection. 自然界允许极长的时期，给自然选择来进行它的工作。
- This shift is rapid and does not depend on natural selection. 这种变迁的过程很快而且并不取决于自然选择。
- Natural selection has tended to reduce this randomization. 自然选择往往倾向于减少这种随机化现象。
- It stops natural selection and genetic survival dead in its tracks. 大意指将会停止自然选择适者生存。
- The development of species was the result of natural selection. 物种的进化是自然选择的结果。
- Charles Darwin formulated the theory of natural selection. 达尔文系统地阐述了自然淘汰的法则。
- Natural selection primarily means the destruction of the unfit. 自然选择主要意味着不适合者的毁灭。
- He concluded that these expressions evolved through natural selection. 他得出结论，这此表达方式经自然选择演变而来。
- It's only human nature to want a comfortable life. 想过舒适的生活不过是普通人的本性。
- Darwin used the term natural selection for this process of discrimination. 达尔文为这种区分过程使用自然选择这一术语。
- A systematic long-term change of this kind suggests the action of natural selection and indicates that female skeletal characteristics confer greater fitness. But is this the whole story. 这种长期的系统变化说明自然选择的作用，并表明女性骨骼的特性较大的适应性。但是，情况完全是这样的吗？
- Natural selection is a slower process with man than with any other creature. 自然选择对人类比起对其他生物是个较为缓慢的过程。
- In this case, natural selection would tend to add to the stature of the plant. 在此种情况下，自然选择就有增加植物高度的倾向。
- The evolution of species presupposes a process of natural selection. 生物演变是以自然选则的过程为前提的。
- Vertebrates unpredictable lizard But, of the vertebrates, unpredictable Nature selected only snakes (and one lizard). 然而,在脊椎动物中,大自然神秘莫测地只选择了蛇(还有一种蜥蜴)
- ANTIBIOTIC drugs are a well-known test of the idea of natural selection. 抗生素是对自然选择学说一个十分知名的论证。
- All nature seemed pregnant with life. 整个大自然似乎充满了活力。
