The movement of cold, deep ocean water to replace warm water at the surface is called _. a. upwelling b. a surface current c. the coriolis effect d. el niño

[ou.01jthe greatest speed with which any physical object moves is 300,000 km/soundsec. which of the following has a speed of 300,000 km/sec? a. light in water b. light in vacuum c. sound in air. d. sound in water

Where the main factor that enabled the growth of cities and civilizations was the existence of

What does the map above tell us about the endemity of typhoid fever