Environmental science guys answer​

13 c 15 a. I solve the two problem

13.Apart from PM 2.5 and PM 10 which are known to be the most harmful air pollutants, there is sulphur dioxide, nitrous oxide, carbon monoxide and other chemical gases which can equally cause irritation in the eyes . "It is called chemical conjunctivitis.

answer; i had to look this up and the only one i found was(last only 15 minutes) plz check first and good luck;