Unlike humans, some birds have independently evolved to flourish on sugar-rich nectar &fruit without ill effect. In a new Science study, researchers find that these bird species share convergent evolutionary changes in key physiological traits and metabolic genes that enable their high-sugar diets.

· · 来源:user资讯

Rachel Reeves’s plans could be hit by Middle East conflict, say economists

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Екатерина Улитина (Редактор отдела «Забота о себе»)

2008 (Nehalem/Westmere)

say experts