Which is not a characteristic of thermoclines?
a. Tropical thermoclines are deeper than those at higher latitudes.
b. Thermoclines are not identical in form.
c. Polar waters tend to lack thermoclines.
d. Thermoclines are more abrupt in the high latitudes.
ANS: D
Thermoclines are more abrupt in the tropics than in higher latitudes. The depth of these thermoclines
can also vary with season, local conditions, and currents. Information can be found in the section The
Ocean Is Stratified by Density.
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