Question

a) How is the purity of air affected?

b) Name the harmful components produced by the vehicles?

c) Why is the policeman wearing the mask?

Answer 1

Answer:

Poor air quality, whether outdoors or indoors, can negatively affect the human respiratory and cardiovascular systems. ... Fine particle pollution has also been linked to even greater health consequences through harmful cardiovascular and respiratory effects.

Particulate matter (PM). One type of particulate matter is the soot seen in vehicle exhaust. ...

Volatile Organic Compounds (VOCs). ...

Nitrogen oxides (NOx). ...

Carbon monoxide (CO). ...

Sulfur dioxide (SO2). ...

Greenhouse gases

The traffic policemen wear mask with charcoal lining because charcoal has activated carbon which absorbs most of the air pollutants, dust pollen, etc. This saves the policemen from their harmful effects.

Answer 2

Answer:

• Poor air quality, whether outdoors or indoors, can negatively affect the human respiratory and cardiovascular systems. ... Fine particle pollution has also been linked to even greater health consequences through harmful cardiovascular and respiratory effects.
• The following are the major pollutants from motor vehicles:
• Particulate matter (PM). One type of particulate matter is the soot seen in vehicle exhaust. ...
• Volatile Organic Compounds (VOCs). ...
• Nitrogen oxides (NOx). ...
• Carbon monoxide (CO). ...
• Sulfur dioxide (SO2). ...
• Greenhouse gases.
• The traffic policemen wear mask with charcoal lining because charcoal has activated carbon which absorbs most of the air pollutants, dust pollen, etc. This saves the policemen from their harmful effects.

Explanation:

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