Question

these formerly were islands that have been eroded down to the depth of the wave base. biogeochemical rocks formed as upwelling occurs here. thats right explain how sea floor features form. 5 of 5 we have moved to the southern ocean that surrounds antarctica. click continue to move in closer to the circled feature that you will be asked about what is this large - scale feature located in the middle of the screen? an oceanic plateau, a spreading ridge a continental shelf a large reef structure data sio, noaa, u.s. navy, nga, gebco image u.s. geological survey google earth - 0:24 1x

Explanation:

To determine the correct answer, we analyze each option:

• A spreading ridge is a mid - ocean ridge where new oceanic crust forms, usually with volcanic activity and a ridge - like structure, not a flat feature in the middle of the ocean.
• A continental shelf is the shallow, submerged edge of a continent, extending from the shoreline, not a large - scale feature in the middle of the open ocean.
• A large reef structure is typically found in shallower waters, often near coasts or in tropical regions, and has a different morphology from a flat, deep - ocean feature.
• An oceanic plateau is a large, relatively flat area of the ocean floor that can form from volcanic activity (like flood basalts) or other processes. In the Southern Ocean around Antarctica, an oceanic plateau fits the description of a large - scale, flat feature in the middle of the ocean.

Answer:

A. An oceanic plateau