Answer:
The Mid-Atlantic Ridge (MAR) is a mid-ocean ridge, a divergent or constructive plate boundary located along the floor of the Atlantic Ocean, and part of the longest mountain range in the world. The ridge has an average spreading rate of about 2.5 centimeters (1 in) per year.
The Mid Atlantic Ridge, like other ocean ridge systems, has developed as a consequence of the divergent motion between the Eurasian and North American, and African and South American Plates. In this way, as the plates move further apart new ocean lithosphere is formed at the ridge and the ocean basin gets wider.
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