Counter current flow is the opposite movement of water against the flow of blood in the fish's gills.
Hey there,
It is the chloroplasts.
Hope this helps :))
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Answer:
Boston, Massachusetts, U.S. Mary Temple Grandin (born August 29, 1947) is an American scientist and activist. She is a prominent proponent for the humane treatment of livestock for slaughter and author of more than 60 scientific papers on animal behavior.
