The CFC pollution sources include:

A. Jet air crafts only
B. Fire extinguishers and jet air crafts
C. Refrigerators and jet air crafts

D. All of these

The CFC pollution sources include: | All of these | CSS, PMS, PPSC, FPSC, KPPSC, SPSC, ISSB and NTS Past Papers | Pakistan's Largest Online Past Papers Database

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