About 10% of the water in the world ocean makes up all of the surface currents. most surface currents move water above the the zone of maximum density change per unit depth.

On your wedding day your lover gives you a gold ring of mass 3.67 g. 48 years later its mass is 3.44 g. on the average how many atoms were abrated from the ring during each second of your marriage? the atomic mass of gold is 197 u. don't enter units