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-Dominant- [34]
2 years ago
10

(ii) Fish use their gills as a gas exchange surface.

Biology
1 answer:
maks197457 [2]2 years ago
4 0
Exchange of gases in fish is very efficient because of: the large surface area of the gills. the large surface area of the blood capillaries in each gill filament. the short distance required for diffusion – the outer layer of the gill filaments and the capillary walls are just one cell thick.
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