Where is the greatest concentration of salt water? a. by river entry ways b. in the polar zones c. in the temperate zones d. by the equator

The answer is; D

This is due to the fact that temperatures of a solvent are directly proportional to the amount of solute they can dissolve. The waters at the equator get heated more than those of other latitudes due to the angle of sun rays exposure and also the duration. This means that these waters can dissolve more salts per unit volume. As the currents push the waters towards the poles, the waters become cooler and loose some of the dissolved salts by precipitation once the saturation point is reached.

did you fail the test? xd

unicellular organisms, like bacteria, are able to perform all life functions within one single cell. multicellular organisms need many different types of cells to carry out the same life processes. each of these special types of cells has a different structure that it perform a specific function.