Question

question 1
the main organ of the respiratory system is the
nose
lungs
esophagus
trachea

Explanation:

The respiratory system's main function is gas exchange. The nose is an entry point, the trachea is a passageway, and the esophagus is part of the digestive system. The lungs are where actual gas exchange (oxygen intake and carbon dioxide release) occurs.

Answer:

lungs