They are mostly air.
No. They are organs. Also, they're the lightest organ in the human body.
It's your feet
I believe that would be the appendix.
Your Dick!
lungs is respiratory organ of cow
The lungs are their own organ but they are located in the thoracic cavity
The lungs are the main organ of the respiratory system, but they are also an organ in the circulatory system.
The lungs
The organ responsible for breathing is your lungs.
You need lungs to breathe.
diaphragm the lungs
The heart is surrounded by the lungs.