The density of ocean water increases when it
a. joins the gulf stream.
c. gets warmer.
b. gets colder.

The correct answer is b. gets older.

Explanation: Density is defined as ratio of mass and volume.

Mathematically,

We know that volume is directly related to temperature.

When the temperature of the substance increases, particles gets separated and this results in the increase of volume.

When the temperature of the substance decreases, the particles come closer to each other, resulting in the decrease of volume.

From the above relation, we conclude that the temperature is inversely related to density.

As the temperature gets colder, it results in the increase in the density. Hence, the correct option is b.

answer; (d) spontaneous processes are characterized by the overall conversion of order to disorder;

iron would move it is magnetic there is a mag field around the current in the wire