Regions of the deep ocean characterized by smooth ocean floor are called

The abyssal plains

Explanation:

The abyssal plains are the regions in the seafloor that are comparatively flat and extends upto hundreds of kilometer wide and a few thousands of kilometer in length. They are usually at a depth ranging from 3500 to 6000 m below the sea level.

The topography of these plains are relatively very smooth. The rate of accumulation of the sediments is very slow and they were assumed to be a stable environment that has undergone least changes. The slope of these abyssal plain is smaller than the continental shelf.

chordata is the answer

he movement of air through earth's or any planet's atmosphere is called wind, and the main cause of earth's winds is uneven heating by the sun. this uneven heating causes changes of atmospheric pressure, and winds blow from regions with high pressure to those with low pressure.

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