The Thermocline or Area of Rapid Temperature Change in the Ocean

The thermocline or area of rapid temperature change in the ocean is important because ________.

A) different chemical compositions form at different temperatures
B) it forms a barrier to many types of marine life that can only exist within certain temperature ranges
C) the ability for the ocean to dissolve CO2 from the atmosphere is dependent on temperature over a range of depths.
D) it controls the climate and rate of evaporation and precipitation near the oceans.
E) none of the above