Lung diffusion is your ability to pass oxygen into the blood from the air sacs of the lungs, and pass carbon dioxide (CO2) back into the lungs from the blood.
It's a fun, and interesting thing to do. It's a great help towards your community and you benefit in the end with people and working skills. It's also great if you need some extra curriculars for your college applications.
The best answer is under or less than 120
I hope this helped
