Sea surface temperatures (sst) are warmest

Sea Surface Temperatures (SST) generally are warmest Multiple Choice where oceans are deepest allowing for sufficient mixing. along the equator where the sun’s rays are most direct. at the subtropics because descending air promotes clear skies. at the poles where long days during the summer help warm the water.

Along the Equator where sun rays are most direct
The equator is the zone where direct sun rays are received most
of the time, all through a year. So intense Insolation is received
and as a result warmest Sea Surface Temperatures are found along
the Equatorial zone.
All other options are incorrect as sufficient mixing cools the
water temperature. Descending air doesn’t affect sea surface
Temperature much. Poles are the places of coolest Temperature.
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