A. industrial chimneys, burning fossil oils and river dams B. sulphurdioxide, acid rain and pesticides C. sulphur dioxide, vehicle exhausts, and aerosols D. sewage,smoke and old vehicles
Correct Answer: C
Explanation
Household combustion devices, motor vehicles, industrial facilities and forest fires are common sources of air pollution. Pollutants of major public health concern include particulate matter, carbon monoxide, ozone, nitrogen dioxide and sulfur dioxide.
