The graph below shows the temperature of ocean water at different depths. Which part of the graph represents the thermocline? a. AB b. BC c. CD d. DE

C

Explanation:

Generally temperature changes rapidly with the dept in aquatic bodies especially the oceans.The thin distinct or transition layer where the variation in temperature with depth is most significant is called Thermocline.

Its represents the gaps which  separate   the upper mixed layer from the lower deeper water bed below,it therefore represent the layer of mixture of the upper surface warmer water (C) below 200 meters, with the  cooler water layer(E) below,from 1000 meters check the attachment.

It is caused by variation in intensity of sunlight.The latter hits the surface water layer and therefore raises the temperature.But,because of decrease in  sunlight penetration,with  increasing  dept, the temperature of the  lower water dept decreases.

C

Explanation:

C is when the most drastic change is in the graph.

layer 3 is younger than layer 6.