Question

 ------ is the flat part of the sea bed.​

Answer 1

Answer:

Features of the Seafloor

Now we know that the seafloor is far from flat. ... The smooth, flat regions that make up 40% of the ocean floor are the abyssal plain. Running through all the world's oceans is a continuous mountain range, called the mid-ocean ridge(“submarine ridge” in Figure 14.23).

Answer 2

The smooth, flat regions that make up 40% of the ocean floor are the abyssal plain. Running through all the world's oceans is a continuous mountain range, called the mid-ocean ridge