Although the disc media and the drives of the CD and CD-ROM are, in principle, the same, there is a difference in the way data storage is organized. Two new sectors were defined, Mode 1 for storing computer data and Mode 2 for compressed audio or video/graphic data.
Most emphysema causes involve repeated breathing in of fumes and other things that irritate and damage the lungs and airways. Specific causes of emphysema can include: 1  Cigarette smoking. 2  Pipe, cigar, and other types of tobacco.3  Certain fumes or dust. 4  Genetic factors.ost emphysema causes involve repeated breathing in of fumes and other things that irritate and damage the lungs and airways. Specific causes of emphysema can include: 1  Cigarette smoking. 2  Pipe, cigar, and other types of tobacco.
Cigarette smoke also causes inflammation and irritation in the lungs leading to an increase in mucus production. Too much mucus in the lungs places you at an increased risk for lung infections, as mucus provides bacteria with the perfect hide-away. Air pollution also plays a role in the development of emphysema.