Examine the temperature profile for the low latitudes (Fig. 1a).Most of the sunlight entering the ocean is absorbed very near the surface. This sun-warmed surface water mixes with cooler, deeper waters as winds, breaking waves, and turbulent currents stir the water. One result of this mixing is a surface layer having nearly uniform temperature, or isothermal, conditions. This layer is called the mixed layer. On the low-latitude profile, the mixed layerextends to a depth of approximately how many meters?