Question

what are the common features between all the respiratory organs

Answer 1

All the respiratory organs have large surface area to get enough oxygen.
All the respiratory organs have thin walls for easy diffusion and exchange of respiratory gases.
All the respiratory organs such as skin, gills and lungs, have a rich blood supply for transporting respiratory gases.

Answer 2

Answer:

Explanation:All the respiratory organs have large surface area to get enough oxygen.

All the respiratory organs have thin walls for easy diffusion and exchange of respiratory gases.

All the respiratory organs such as skin, gills and lungs, have a rich blood supply for transporting respiratory gases.