4. What is one possible reason that average water clarity decreased from
1990 to 2015?
A change in the amount of water.
Less deposits from runoff.
Eutrophication
A change in the amount of oxygen in the water.
1 answer
Eutrophication is one possible reason that average water clarity decreased from 1990 to 2015. Eutrophication occurs when excess nutrients like phosphorus and nitrogen enter a body of water, leading to an overgrowth of algae and other aquatic plants. These organisms can cloud the water and reduce visibility, ultimately decreasing water clarity.
1 answer