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Physical Sciences
The temperature of the upper layer of ocean water is affected by sunlight and wind. There is often a very sharp difference in temperature between the surface zone and the more stationary deep zone. The thermocline layer marks the abrupt drop-off in temperature. The following data were obtained in a study of temperature (x, measured in °C) versus depth (y, measured in meters) above the thermocline layer in the Mediterranean Sea.
x
76
54
146
7
91
130
131
117
y
11.0
16.9
8.0
24.7
17.4
16.0
11.1
16.5
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