Question

which are extensive plains that lie between the continental margins and mid-oceanic ridges.​

Answer 1

Answer:

THE ANSWER IS ABYSSAL PLAINS

Explanation:

These are extensive plains that lie between the continental margins and mid-oceanic ridges. The abyssal plains are the areas where the continental sediments that move beyond the margins get deposited. These areas are the smoothest and flattest surfaces on Earth, covered with sediments such as silt and mud. These plains are more familiar in the Atlantic Ocean and unusual in the Pacific Ocean.

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