Use the accompanying figure to answer the following question.
-Recall that areas with high net primary productivity not only produce high levels of biomass rapidly,they also take up large amounts of CO2 and give off large amounts of oxygen.What is the likely result of the increasing amounts of fertilizers in the major rivers emptying into oceans?
A)Eutrophication,followed by hypoxia,is a likely result,ultimately leading to more CO2 uptake and more oxygen released.
B)Eutrophication,followed by hypoxia,is a likely result,ultimately leading to less CO2 uptake and more oxygen released.
C)Fisheries will improve as the extra nutrients feed shellfish and fish.
D)Productivity in these areas will increase permanently,leading to more CO2 uptake and more oxygen released.
E)Eutrophication,followed by hypoxia,is a likely result,ultimately leading to less CO2 uptake and less oxygen released.

Question

Use the accompanying figure to answer the following question.
-Recall that areas with high net primary productivity not only produce high levels of biomass rapidly,they also take up large amounts of CO2 and give off large amounts of oxygen.What is the likely result of the increasing amounts of fertilizers in the major rivers emptying into oceans?
A)Eutrophication,followed by hypoxia,is a likely result,ultimately leading to more CO2 uptake and more oxygen released. 
B)Eutrophication,followed by hypoxia,is a likely result,ultimately leading to less CO2 uptake and more oxygen released. 
C)Fisheries will improve as the extra nutrients feed shellfish and fish. 
D)Productivity in these areas will increase permanently,leading to more CO2 uptake and more oxygen released. 
E)Eutrophication,followed by hypoxia,is a likely result,ultimately leading to less CO2 uptake and less oxygen released.

Quizplus · Accepted Answer

Fertilizers lead to eutrophication, which stimulates excessive algae growth. As the algae die, they are decomposed by bacteria, which consume oxygen, leading to hypoxia (low oxygen levels). In this condition, photosynthesis is inhibited and the uptake of CO2 is reduced, while oxygen consumption increases, leading to less CO2 uptake and less oxygen released.

Use the Accompanying Figure to Answer the Following Question