It goes 2 , 5, 3, 4 , 1 in order from top to bottom
About 59% according to the article in Morbidity and Mortality Weekly Report
The answer should be “Tobacco”
1.respiration
2.diaphragm
3.lungs
4.inhaling
5.out
6.
7.i think trachea
8.rib cage
not sure for 3 and 6 cuz diagram is needed
Yes it would be a good choice because it’s fat free