Answer: Respiratory system
Step-by-step explanation:
The respiratory system is including organs such as lungs, blood vessels, airways, and also the muscles. They are helping us to breathe by moving the oxygen throughout the body. The respiratory system also has the ability to clean cases such as carbon dioxide.
The main function of the respiratory system is to help to breathe and exhaling but also there are more functions of it such as protecting the airways, removing waste gases, bringing air to the body, and delivering oxygen.