Question

the rate of breathing in aquatic organims is much faster than seen in terrestrial organisms, why​

Answer 1

Answer: The amount of dissolved oxygen in water is  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

Answer:

The availability of oxygen is much less in aquatic environment than in terrestrial environment. Due to this, aquatic organisms need to work harder to obtain oxygen. Hence, rate of breathing in aquatic organisms is much faster than in terrestrial organisms.