An example of macroevolution is the appearance of feathers during the evolution of birds from theropod dinosaurs.
宏进化例子是鸟类在从兽角亚目恐龙进化期间羽毛出现。
An example of macroevolution is the appearance of feathers during the evolution of birds from theropod dinosaurs.
宏进化例子是鸟类在从兽角亚目恐龙进化期间羽毛出现。
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