by pumping water over their gills, fish and aquatic mollusks? a. keep their gill membranes moist b. maintain their body temperature c. keep themselves moving through the water d. promote diffusion of oxygen and carbon dioxide
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Step 1: By pumping water over their gills, fish and aquatic mollusks create a flow of water that allows for the exchange of gases (oxygen and carbon dioxide) between the water and their gill membranes. Show more…
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