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.
Here are some other things that can cause it: Pollution and fumes: You can get COPD from air pollution. Breathing in chemical fumes, dust, or toxic substances at work can also cause it. Your genes: In rare cases, people with COPD have a defect in their DNA, the code that tells your body how to work properly. This defect is called âalpha-1 antitrypsin deficiency,â or AAT deficiency.