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Question

Aquatic animals use dissolved _________ in water for respiration.


A
salts
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B
oxygen
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C
nitrogen
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D
carbon dioxide
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Solution

The correct option is B oxygen

Aquatic animals use the oxygen dissolved in water for respiration. A majority of aquatic animals like fish and prawns breathe through special organs called gills. Gills are projections of the skin that help in using oxygen dissolved in water.


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