Question

Using the graph below, at what depth does the thermocline begin?

Answer 1

Answer:

D. 150 m

Explanation:

Answer 2

Answer: The thermocline begins at 100 meters of depth.

Step-to-step explanation:-

Thermocline is a transition oceanic water layer between deep and surface water in which water temperature decreases rapidly with increasing depth.

From the given graph it cam be seen that at 100 meters the thermoline begins such that  the temperature drops from $27^{\circ}$ to $24^{\circ}$.

Hence, the thermocline begins at 100 meters of depth.