Multiple Choice
The counter-current system of flow is involved in:
A) Increasing blood flow into gills.
B) Decreasing the time it takes for blood to flow through gills.
C) Increasing the amount of oxygen that diffuses into the blood.
D) Increasing the efficiency of the movement of gills.
E) Increasing heart rate.
Correct Answer:
Verified
Correct Answer:
Verified
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