What is the best possible reason why water clarity changed over time from 2.4m in 1990 to 2.7m in 2005 to 1.95m in 2015?

B. There was more pollution from 1990 to 2005, but then pollution decreased from 2005 to 2015.

Which of the following is a true statement?(1 point)

Responses

A. The qualities of the water itself are central to defining the health of the whole ecosystem.

B. Water quality is not important.

C. The qualities of the water can only have a positive effect on the ecosystem.

D. Eutrophication helps increase water quality.

A. The qualities of the water itself are central to defining the health of the whole ecosystem.

Did you find a relationship between changes in pH, surface temperature, water clarity and dead zones?(1 point)

Responses

A. Yes, when changes to pH, surface temperature and water clarity occurred there was an increase in dead zones.

B. No, when changes to pH, surface temperature and water clarity occurred there was no change in dead zones.

C. Yes, when changes to pH, surface temperature and water clarity occurred there was a decrease in dead zones.

D. No, there is no relationship between any of these factors.

A. Yes, when changes to pH, surface temperature and water clarity occurred there was an increase in dead zones.