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Wind waves at many wavelengths and heights may approach a single spot from different directions to form a(n) _____. 

The reference level to which tidal height is compared is called the_____. 

A wave in which particles of water move in closed circles as the wave passes is called a(n) _____. 

Surface winds across the tropical Pacific normally move from east to west, but temporarily reverse at irregular intervals of roughly 3 to 8 years. This change in wind direction is called the _____. 

Which statement describes the characteristic of the Atlantic coast? 

_____ currents flow from east to west and west to east linking the eastern and western boundary currents. 

Gravity tends to pull Earth and the moon toward each other, but inertia, sometimes called _____, keeps them apart.  

Chlorofluorocarbons (CFCs) can be used as _____, which are artificial substances with known histories of production or release.

The _____ associated with a great storm will build the ocean surface into a broad dome as much as 1 meter (about 3 feet) higher than average sea level. 

The _____ is the uppermost layer of seawater lit by the sun.