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1·What's worse from a scientific standpoint: banded and unbanded penguins respond differently to climate changes, with the banded birds showing up even later to breed when food is scarce.

从科学角度看，更为糟糕的是：受绑和未受绑的企鹅对于气候变化的反应各不相同，当食物很少时，受绑的企鹅表现出晚育特征。