Science, asked by krishi0902, 6 months ago

Why do policeman regulating traffic at a crowded crossing wear masks​

Answers

Answered by StormBringer
8

Answer:

The policeman regulating traffic at a crowded crossing wear masks to prevent dust from entering their nose and mouth .

They also want to safeguard themselves from the toxic pollutants exhausted by the vehicles.

Explanation:

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Answered by Jastinunni
3

Answer:

they were masks to protect their nose and mouth from harmful bacteria and dust particles

Explanation:

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