During Periods of Stratification, Transfer Between Surface and Bottom Waters

Question

During periods of stratification, transfer between surface and bottom waters is controlled by
A) mixing.
B) diffusion.
C) niche partitioning.
D) current.

Accepted Answer

During periods of stratification, mixing and currents are reduced, so diffusion becomes the main mechanism for transfer between surface and bottom waters. Niche partitioning may occur within the water column, but it does not directly control transfer between surface and bottom waters.