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6)respiration is respiration using electron acceptors other than molecular oxygen. although oxygen is not final electron acceptor, the process still uses a respiratory electron transport chain.
7)nasal hair keeps harmful debris out of the body system and maintains moisture in the air we breathe .blood vessels in nose and face are extra dense . in the nose ,they support hair growth .
8) Oxygen and Carbon dioxide dissolves in water and most fishes exchange dissolved Oxygen and Carbon dioxide in water by means of the gills..... water taken in continuously through the mouth pass backward between the gilsbar and over the gills filaments,where exchange of gases take place.
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