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i think it helps open and close the gills on a fish ------------ don't be ridiculous; that's an immanence front. a google of "function isthmus," quotes included, returns this Q! So you might provide more detail. My roomie and I are arguing whether it is the part of a graph in mathematics that would be...functional?
No, gills do not work on land. Gills are used for water purpopes only, to help breathe under water.
GillsThe gills perform the same function.
The function of gills on a mushroom is to hold and release the spores that a mushroom produces.
to maximize the area where the spores are produced and also to help hold the cap of the mushrooms.
The gills help it breathe.
to BREATH!
The primary function of external gills in aquatic animals is to exchanges gases. However, gas exchange is more difficult with external gills.
Fish breathe with the help with gills.
the gills help the squid breathe
Gill slits in sharks and rays help to funnel water into the gills, which empty into the pharynx and eventually the lungs.
Fish Use Gills Instead of lungs. Gills Help fish to Breath. Fish Use Gills Instead of lungs. Gills Help fish to Breath.