These olfactory ratios were then plotted onto evolutionary trees that other researchers had earlier derived for bird evolution.

此嗅觉比率然后被绘制成进化树。进化是其它研究人员早其研究鸟类进化所做的一种图表。

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Our relationship with trees goes back to our evolutionary roots-way back to when our ancestors thrived in the green canopy above.

人类与树的关系可以追溯到我们进化的源头去——那时候我们的祖先还生活在绿树形成的天棚上。

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The evolutionary purpose of rubber, and the reason why it has appeared independently in plants as diverse as trees, guayule and dandelions, is that it gums up the mouthparts of herbivorous insects.

橡胶形成的进化目的，以及橡胶之所以分别出现在橡胶树、银胶菊、蒲公英等各种各样的植物中的原因，在于它能黏住食草昆虫的口器。

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And lo, when he drew trees that tracked the evolutionary relationships between all the RecAs and all the RpoBs found on the cruise, he discovered parts of the trees that did not fit with the pattern established by known versions of these genes in the public genetic databases.

ECONOMIST: A new domain of life

"Once we have those trees we look at distribution of these different word order features over the descendant languages, and build evolutionary models for what's most likely to produce the diversity that we observe in the world, " Dr Dunn said.

BBC: Language universality idea tested with biology method