Question

Sources of oxygen and how the fish in water gets oxygen
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Answer 1

The sources of oxygen is oxygen supply . The fishing water gets oxygen , fish have gills to breathe in the oxygen contained in water.

Answer 2

This process requires large volumes of water to pass through absorption surfaces to get enough oxygen into their bodies using their mouths and gills. These body parts work like a pump to keep water moving over the gas absorption surfaces of the gills.