Question
What is one possible reason that average water clarity decreased from 1990 to 2015? (HINT: Go back and re-read page 2 of this lesson.)(1 point)
Responses
A change in the amount of water.
A change in the amount of water.
Less deposits from runoff.
Less deposits from runoff.
Eutrophication
Eutrophication
A change in the amount of oxygen in the water.
A change in the amount of oxygen in the water.