一些生物学家称，海洋洋流和空气气流是植物种子传播到夏威夷的原因。
Some biologists argue that ocean and air currents are responsible for the transport of plant seeds to Hawaii.
内华达州的黑熊数量介于300只至400只之间，生物学家称它们的数量每年增长16%。
Between 300 and 400 black bears live in Nevada, and biologists say the population is growing 16% a year.
20世纪早期的生物学家也得出了类似的结论，不过他们从概率的角度对其进行了限定，称没有理由可以说明进化不能倒退。
Early 20th-century biologists came to a similar conclusion, though they qualified it in terms of probability, stating that there is no reason why evolution cannot run backwards.
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