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Many Organs Have Adaptations to Increase the Rate of Diffusion

Question 41

Multiple Choice

Many organs have adaptations to increase the rate of diffusion of a gas or solute.How are fish gills adapted to optimize oxygen absorption?


A) Bidirectional flow of water across the gills
B) Co-current flow of water across the gills and blood within the gill capillaries
C) Continual flow of water across the gills
D) Countercurrent flow of water across the gills and blood within the gill capillaries

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