Which of the following orders correctly represents the trend in eutrophication?
-
A.
Lack of oxygen → Death of aquatic organisms → Massive algal growth -
B.
Excess nitrates and phosphates → Massive algal growth → Lack of oxygen → Death of aquatic organisms -
C.
Heavy mineralization → Lack of oxygen → Massive algal growth -
D.
Excess nitrates and phosphates → Lack of oxygen → Massive algal growth → Death of aquatic organisms