The Mid-Oceanic Ridge is elevated above surrounding sea floor because it is made of hot and low-density lithosphere.

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The Mid-Oceanic Ridge is elevated above surrounding sea floor because it is made of hot and low-density lithosphere. As magma rises from the mantle and cools, it creates new oceanic crust, which is hot and less dense than the surrounding older crust. This causes the ridge to rise above the surrounding sea floor.

The Mid-Oceanic Ridge Is Elevated Above Surrounding Sea Floor Because