Question

The disease caused by air pollution is :

Hint:

Air pollution primarily affects the respiratory system, causing or aggravating conditions like asthma, bronchitis, and COPD. Water-borne diseases (cholera, typhoid, diarrhoea) are caused by contaminated water, not air.

Answer 1

Air pollution introduces harmful substances such as particulate matter, nitrogen dioxide, sulfur dioxide, and ozone into the atmosphere. When inhaled, these pollutants can irritate the respiratory tract and trigger inflammation. Asthma is a chronic respiratory condition characterized by airway inflammation and constriction, which can be exacerbated or triggered by exposure to air pollutants. In contrast:

• Diarrhoea is primarily caused by ingestion of contaminated food or water containing pathogens like bacteria, viruses, or parasites.
• Cholera is an acute diarrhoeal disease caused by the bacterium \textit{Vibrio cholerae}, typically spread through contaminated water.
• Typhoid is a bacterial infection caused by \textit{Salmonella typhi}, transmitted through contaminated food and water.

Only Asthma has a direct and well-established link to air pollution exposure. Final Answer: Asthma