How do gills allow fish to breathe under water?

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  1. 0 Votes

    Basically, gills filter out the oxygen from water and transfer it into the fish’s bloodstream.

    You can look at a much more detailed response from a previous GreenAnswers question dealing with this very same topic: http://greenanswers.com/q/165030/animals-wildlife/fish/how-do-gills-allow-fish-breathe

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