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Water flowing over gills and blood flowing through gill capillaries moving in opposite directions is called _____.
a. capillary respiration
b. out pouching exchange
c. anaerobic respiration
d. countercurrent exchange
e. lactate respiration

Respuesta :

Answer:

D.) Countercurrent exchange

Explanation:

Countercurrent exchange is the exchange of substances between two fluids moving in opposite directions, so this would be the most reasonable response.

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