Question

question 4
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as scientists studied and mapped the ocean floor they discovered evidence that large slabs of rock were moving apart as a result of convection currents. this process is known as seafloor

Explanation:

This term refers to the geological process where tectonic plates move apart, driven by mantle convection currents, creating new oceanic crust at mid-ocean ridges, which matches the described discovery about the ocean floor.

Answer:

spreading