Question

two characteristics of the respiratory system

Answer 1

Explanation:

Two characteristics of the respiratory system:-

1) Large surface area - Lungs have a huge quantity of alveoli that enhances the surface area needed for the transfer of gases.

2) Thin walls - There is a single sheet of cells available in the alveolar surface which provides gases a short dissemination distance.

Answer 2

Explanation:

The two characteristics of respiratory system are:

i, Gas Exchange – oxygen and carbon dioxide.

ii,Breathing – movement of air.