Question

59/59 what is an isopycnal? a surface mixing zone a zone of rapid salinity change a layer of constant temperature a layer of constant density

Explanation:

An isopycnal is a layer in a fluid where the density is constant. Density in fluids is affected by factors like temperature and salinity. In oceanography and fluid - related studies, isopycnals are important for understanding the stratification and circulation of fluids.

Answer:

D. A layer of constant density