Question

Aquatic animals breathe fast than terrestrial organisms

Answer 1

Aquatic animals take in the oxygen dissolved in water. The amount of dissolved oxygen in water is fairly low compared to the amount of oxygen in the air. Therefore, rate of breathing in aquatic organisms is much faster than in terrestrial organisms.

Answer 2

on land there is a more amount of oxygen present in atmosphere than in water. hence aquatic animals need to make there rate of respiration faster to match there oxygen need but terrestrial animals have a huge atmosphere to breathe in and can take a huge amount of oxygen at one time so they can reduce there rate of respiration.