Question

Describe the mechanism of gaseous exchange in fish​

Answer 1

Answer:

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Explanation:

Oxygen and carbon dioxide dissolve in water, and most fishes exchange dissolved oxygen and carbon dioxide in water by means of the gills. ... Water taken in continuously through the mouth passes backward between the gill bars and over the gill filaments, where the exchange of gases takes place.

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Answer 2

Answer:

Oxygen and carbon dioxide dissolve in water, and most fishes exchange dissolved oxygen and carbon dioxide in water by means of the gills. Water taken in continuously through the mouth passes backward between the gill bars and over the gill filaments, where the exchange of gases takes place.

Explanation:

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