Assertion: respiratory tract's function | /r/HasProperty | gas exchange
Facets:
Source sentences:
text: The primary function of the respiratory system is gas exchange.
text: Main function of respiratory system is gaseous exchange.
text: The main function of the respiratory system is the exchange of gases such as oxygen and carbon dioxide in the lungs.
text: While the primary function of the respiratory system is gas exchange, this extensive organ system also has some other roles.
text: The major function of the respiratory system is gas exchange.