Question

A flat topped seamount ,formed when the top of sinking island is eroded by sea waves

Answer 1

Answer:

guyot

This process is called subsidence. The seamount erodes into the sea, its top made flat by the constant pounding of powerful ocean waves. As it subsides, the flat-topped seamount is called a guyot. As the island subsides to become a guyot, its ring-shaped fringing reef turns into a barrier reef.