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.
Smoking marijuana may also cause COPD. People who inhale cooking fumes or have extended exposure to pollutants, such as workplace or environmental hazards, can also develop COPD. It is also believed that genes play a role in who develops COPD and how severe it is. One known genetic cause of COPD is alpha-1 antitrypsin deficiency.