Difference between External and Internal Respiration | Zoology
The upcoming discussion will update you about the difference between external and internal respiration in animals. Difference # External Respiration: 1. It is a physical process in which oxygen (O2) is absorbed and carbon dioxide (CO2) is given out. 2. Enzymes do not play any role in the process. 3. Restricted to respiratory organs only. 4. Respiratory structures are body [...]