Arrange the following air pollutants in descending order of their toxicity:
I. Carbon monoxide
II. Lead
III. Sulfur dioxide
IV. Nitrogen oxides
1
I, II, III, IV
2
III, I, II, IV
3
II, IV, III, I
4
III, IV, I, II
Arrange the following air pollutants in descending order of their toxicity:
I. Carbon monoxide
II. Lead
III. Sulfur dioxide
IV. Nitrogen oxides