Question 2Which of the following is not a source of air pollution?(a) automobile exhaust(b) burning of firewood(c) windmill(d) power plant

Question 2Which of the following is not a source of air pollution?(a)

1.	Question 2Which of the following is not a source of air pollution?(a) automobile exhaust(b) burning of firewood(c) windmill(d) power plant
Answer» Question 2 Which of the following is not a source of air pollution? (a) automobile exhaust (b) burning of firewood (c) windmill (d) power plant