Though it is difficult to generalize for the ocean as a whole, the bottom of the euphotic zone is about ____ deep in mid-latitudes.

  Cells of the ____ domain are larger than those of the ____ domain.

Waves tend to be parallel to the shore when they break due to the process of ____.

  A transverse current is a ____.

  The only ocean current that continues in an uninterrupted circle around the circumference of Earth without encountering land is the ____.

About how many kilometers (miles) is it from the center of Earth to the outer edge of the outer core?

Why is the pH of ocean water more acidic in deep water?

  Thermohaline circulation is a ____ phenomenon.

Eutrophication is caused by ____.

  Gyres move in a clockwise rotation in the Northern Hemisphere delivering ____ surface currents along the East Coast and ____ surface currents along the West Coast of continents.