A ridge is a long narrow elevation of land, it
could be a chain of hills or mountains and it
could be on land or in the ocean. The oceanic
ridge is a continuous submarine mountain chain
that extends about 80,000 km or 50,000 miles
through all the world's oceans.
Ridges separate the oceans into distinct
basins and some are seismically active (caused by
earthquakes). The seismically active oceanic
ridge is about 37,00 miles long and extends down
along the axis of the entire Atlantic Ocean.
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