Fluids, such as ocean water, flow from areas of higher density to areas of lower density. What best describes how a change in density can occur in ocean water?

Question

A.
by changing the direction of currents in the ocean
B.
by changing the wind direction of air above the ocean
C.
by changing the salt concentration of the ocean
D.
by changing the abundance of animals living in the ocean

Answer 1

The best answer is:

C. by changing the salt concentration of the ocean

Changes in salt concentration (salinity) can affect the density of ocean water. Higher salinity increases water's density, while lower salinity decreases it. This process contributes significantly to ocean circulation and stratification.