Question

If the process of diffusion is not sufficient in large animals then how the respiration takes place​

Answer 1

Answer:

Respiration takes place through diffusion

Explanation:

Each cell diffuses in Oxygen nd diffuses out Carbondioxide

Answer 2

Answer:

The main structures of the human respiratory system are the nasal cavity, the trachea, and the lungs. All aerobic organisms require oxygen to carry out their metabolic functions. ... In other words, if the cell were very large or thick, diffusion would not be able to provide oxygen quickly enough to the inside of the cell.