The Surface Mixed Zone Is Characterized By_______

The surface mixed zone is characterized by_______ .

A) high density water near the surface that rapidly decreases in density with depth
B) nearly constant temperatures to a depth of about 300 meters
C) a rapid change from warm temperatures on top to cold temperatures at a depth of about 300 meters
D) a mixture of temperatures and densities to a depth of about 300 to 450 meters depth
E) low density water near the surface that rapidly increases in density with depth