Question

fishes breathe faster than dogs give reason
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Answer 1

Answer :-

The rate of breathing in aquatic organisms is much faster than in terrestrial organisms because the amount of dissolved oxygen is fairly lower in water than air and also that aquatic organisms like the fishes obtain oxygen from water present in the dissolved state.

Answer 2

Answer:

Air has 20 times more oxygen than water does, and water is also heavier than air, so it's harder to move into the fish's gill.

This is the reason why fish needs to breathe more faster.