Question

fish can ventilate in denser water with limited oxygen

Answer 1

ok then



what is question that I must answer.

please mention it ok .....


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@GOUTHAMCHOUDARY

Answer 2

Fish are common intermediate hosts of trematode cercariae and their gills can potentially serve as important sites of penetration by these larval stages. We experimentally tested the hypothesis that volume of ventilation flow across the gills contributes to acquisition of these parasites by fish. We manipulated the intensity of ventilation by using different oxygen concentrations.