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Question
Countercurrent flow in the respiratory systems of fish is a mechanism that accounts fora. oxygen uptake by blood capillaries in the gills.
b. ventilation across fish gills.
c. the transport of blood from the gills to the fish's heart.
d. the transport of blood from the heart to the fish's main body mass.
e. the flow of blood in gills as opposed to the flow of blood in the main body mass of fish.
Answer
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