Density is lowest at the surface, where the water is the warmest. As depth increases, there is a region of rapidly increasing density with increasing depth, which is called the_________...? Mcqs

Density is lowest at the surface, where the water is the warmest. As depth increases, there is a region of rapidly increasing density with increasing depth, which is called the_________...?

(A) Pressure

(B) Phytoplankton

(C) Pycnocline

(D) Salinity