Use the following data profiles to best describe why there is a larger shift in the values of temperature, salinity, and density in the upper part of the water column than in the lower parts. a. upper part of the water column represents areas of greatly reduced turbidity
b. upper part of the water column represents areas of low sunshine penetration
c. upper part of the water column represents areas of high sunlight penetration
d. upper part of the water column represents areas of water devoid of nutrients