Darwin expected species to change slowly, but not at the same rate – some organisms such as Lingula were unchanged since the earliest fossils.
达尔文认为物种
化是缓慢的，但不是以同样的速度化--
海豆芽样的生物从
早的化石以来未发生
。
Darwin expected species to change slowly, but not at the same rate – some organisms such as Lingula were unchanged since the earliest fossils.
达尔文认为物种化是缓慢的，但不是以同样的速度化--海豆芽样的生物从早的化石以来未发生。
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