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


A line graph relating ocean depth to water temperature. At 0 meters, temperature is approximately 27°C. At 50 meters, temperature is approximately 24°C. At 100 meters, temperature is approximately 11°C. At 150 meters, temperature is approximately 8°C.


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0 meters

50 meters

100 meters

150 meters