Question

24. How do aquatic animals like fish (which live in water) get oxygen required for breathing (or respiration)?
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Answer 1

Answer:

oxygen dissolved in water so the aquatic animals eaisly take up oxygen by gills and other respiratory organs ..

Answer 2

Answer:

Animals which live in water use oxygen gas dissolved in water to respire.   

Oxygen dissolve in water by diffusion from the surrounding air; aeration of water that has tumbled over falls and rapids; and as a waste product of photosynthesis. This dissolved oxygen is then used by water animals for respiration.