Sagot :
Answer:
Each filament contains a capillary network that provides a large surface area for exchanging oxygen and carbon dioxide. Fish exchange gases by pulling oxygen-rich water through their mouths and pumping it over their gills.
#CarryOnLearning
Answer:
fish has an oxygen on its own that gas is came from the air cause air give us an oxygen too and air came from ☁ cloud and cloud came from oxygen air and we need oxygen to live that's why we need oxygen,gas,air,cloud and human
Explanation:
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