would you expect the DO (dissolved oxygen ) in water taken from a stream entering a lake to be higher or lower

Question

would you expect the DO (dissolved oxygen ) in water taken from a stream entering a lake to be higher or lower than the DO taken from the lake itself? Explain.

Answer 1

The water in the stream would tend to have a higher level of oxygen, because of the physical perturbation of the water as it moves over obstacles in the stream bed.