One of the major cause of emphysema is |
|||||||
a) |
Pollution |
b) |
Smog |
c) |
Cigarette smoking |
d) |
Sanitary condition |
One of the major cause of emphysema is |
|||||||
a) |
Pollution |
b) |
Smog |
c) |
Cigarette smoking |
d) |
Sanitary condition |