Observe the picture given in Fig. 15.1 carefully and answer the following questions.

(A) What is covering the nose and mouth of the police man ?
(b) Why is he putting a cover on his nose?
(C )Can you comment on air quality of the place shown in the Fig.15.1?

Explanation

(a) Mask (b) To save himself from dirt/polluted air. (c) Air quality of the place is not good. It is due to the smoke and gases emitted by the automobiles along with dust particles present in the air.