Mid-Ocean Ridges Are Elevated Above the Surrounding Seafloor Because

question 51

Multiple Choice

Mid-ocean ridges are elevated above the surrounding seafloor because

• A) rising ocean currents create a vacuum that pulls ridges up.
• B) the lithosphere is thickest at the ridges so they stand up taller.
• C) ridge rocks are hot and therefore are relatively less dense than the surrounding seafloor.
• D) ridge rocks are mafic,which are less dense than ultramafic ocean basin rock.

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A decrease in cognitive function that may affect memory, reasoning, and other mental activities.