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16 July, 20:54

How do gills work for fish and sharks?

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  1. 16 July, 21:05
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    Like other fish, sharks "breathe" through their gills, which are respiratory organs akin to our lungs. As water passes over the gill's membranes, tiny blood vessels extract oxygen from the water. Carbon dioxide waste also passes from the shark's blood and out of its body through the gill tissue.
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