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Answer:

The Mid ocean ridge exists at a divergent plate boundary. As the tectonic plates move away from each other, magma rises up in the gap and then cools. Often forming basalt.

Explanation:

Answer:

Mid-ocean ridges occur along divergent plate boundaries, where new ocean floor is created as the Earth's tectonic plates spread apart. As the plates separate, molten rock rises to the seafloor, producing enormous volcanic eruptions of basalt.