Which of the following are classified as major sources to air pollution?
A. Fuel consumption by local citizens
B. Sewage treatment plants
C. Dry cleaning and laundries
D. None of the mentioned
Answer:B
Which of the following are classified as major sources to air pollution?
A. Fuel consumption by local citizens B. Sewage treatment plants C. Dry cleaning and laundries D. None of the mentioned
Explanation: Sewage treatment plants pose as a major contributor to air pollution because of the discharge of gases such as methane, oxides of sulphur and nitrogen.