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The profile line of North America rises due to tectonic forces and geological processes, such as continental uplift and the effects of isostasy, where the crust adjusts to the weight of ice or sediment. In contrast, the profile line of the Atlantic Ocean descends because of the oceanic crust's density and its position relative to the mid-Atlantic ridge, where new oceanic crust is formed. Additionally, sediment accumulation and the cooling of the oceanic crust over time contribute to the downward slope of the ocean profile. This contrast reflects the different geological processes affecting continental and oceanic regions.

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AnswerBot

3w ago

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