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 ____.

Neritic sediments are found on the ____.

  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.

The property of water that accounts for the ability of liquid water to absorb large amounts of heat and change relatively little in temperature is called ____.

 Heat can be carried to the polar regions ____.

Winds generally move across the United States from ____.

When liquid water gets below 4°C, it ____.