Effect of Air Pollutants on Health

The video discusses the health effects of various air pollutants, including particulate matter (PM10 and PM2.5), ozone, nitrogen oxides, and sulfur dioxide. These pollutants, often resulting from human activities like burning fossil fuels, can cause respiratory and cardiovascular diseases, asthma, and lung cancer. Ground-level ozone, formed by photochemical reactions, contributes to smog and respiratory problems. Nitrogen oxides, primarily from vehicles and factories, are linked to bronchitis in children with asthma. Sulfur dioxide, from fossil fuel combustion, irritates the respiratory system. The video emphasizes the importance of reducing emissions through technologies like catalytic converters.

What role does ozone play in the atmosphere, and what problems does ground-level ozone cause?

What are the sources of nitrogen dioxide emissions mentioned in the text?