the answer is breathe.
lungs
They help us breathe while we help them live.
because it helps us t o breathe
yes they help us breathe
your lungs!
alveoli
They provide a space for the gas exchange to occur where carbon dioxide is dropped off and oxygen is picked up by the circulatory system.
It helps us to breathe more comfortable.
The Respiratory System is important to us because you can breathe or do anything without it. It is the main part of you body.
The lungs clean your blood, the other strucs allow you to talk.
It causes us to breathe. We could not live without the process it goes through for us.