The earth rotates on an imaginary line called an?

Newtons second law deals most cosely with

How far is the region from the equator or control climate

1) describe the physical layout of the ocean floor ? 2) explain how the dumbo octopus swims differently than other octopus species and why this would be an advantage in the aphonic zone . 3) why are the types of organisms that live at each underwater hot vent so dramatically different ?