Answer:
Continental Drift
Step-by-step explanation:
This Happens:
A mid-ocean ridge or mid-oceanic ridge is an underwater mountain range, formed by plate tectonics. This uplifting of the ocean floor occurs when convection currents rise in the mantle beneath the oceanic crust and create magma where two tectonic plates meet at a divergent boundary.
Hope I helped, have a nice day!
-Aadi x