a Narwhals respiratory system is the inside works of the narwhal such as breathing (lungs),etc.,etc.
The respiratory system is the system that handles breathing.
The Respiratory System
The trachea is the airway in the respiratory system.
no, they do not have a respiratory system
The respiratory system.
Respiratory system
how does the respiratory system work
1. Respiratory system 2. Cardiovascular system
The lungs are part of the respiratory system! they help the circulatory by giving oxygen, but they are just respiratory.
cycling it is good for the respiratory system cycling it is good for the respiratory system
The respiratory system.
Respiratory system