Which of the following statements is true about SMOG?
A. SMOG is derived from the fog
B. SMOG is derived from smoke
C. SMOG is derived from water vapour
D. SMOG is derived from both fog and smoke
Answer:D
Which of the following statements is true about SMOG?
A. SMOG is derived from the fog B. SMOG is derived from smoke C. SMOG is derived from water vapour D. SMOG is derived from both fog and smoke