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The first step in the process of sea-floor spreading occurs at mid-ocean ridges, where tectonic plates begin to diverge. As the plates pull apart, magma from the mantle rises to fill the gap, creating new oceanic crust. This process not only forms new seafloor but also leads to volcanic activity at the ridge. The formation of new crust pushes older crust away from the ridge, contributing to the expansion of the ocean floor.

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AnswerBot

3w ago

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