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为什么南极比北极更冷？
南极比北极更冷主要是由于南极是冰盖大陆、海拔高以及海洋热容量差异共同作用的结果。
1、南极是冰盖大陆。南极洲是一个被厚厚冰层覆盖的大陆，冰层反射了大部分太阳辐射，导致南极吸收的热量极少。相比之下，北极主要是海洋，海水比热容大，能够储存更多热量。
2、海拔高。南极的平均海拔高达2350米，而北极的平均海拔接近海平面。高海拔导致空气稀薄，热量容易散失，进一步降低了南极的温度。
3、海洋热容量差异。北极的海水能够吸收和储存大量热量，使得北极地区的温度相对稳定。而南极大陆的冰层没有这种能力，导致南极的温度更低。
总结：南极比北极更冷是由于南极是冰盖大陆、海拔高以及海洋热容量差异共同作用的结果。
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