Essential for the survival of living things and for staying healthy
Four common air pollutants carbon monoxide, nitrogen oxides, particulate matter, and sulfur dioxide
Source of carbon monoxide Formed from the incomplete burning of fossil fuels
Two sources of nitrogen oxides (1) Burning of nitrogen in hot vehicle engines; (2) Produced by lightning activity
Two sources of particulate matter (1) Forest fires (2) Burning of fossil fuels
Two sources of sulfur dioxide (1) Released during volcanic eruptions ; (2) Burning of fossil fuels
Two pollutants causing acid rain nitrogen oxides and sulfur dioxide
Why is carbon monoxide poisonous? It reduces the ability of blood to carry oxygen to the body
Common health effect of all pollutants All four major pollutants cause respiratory problems
(1) Kills plants and fish; (2) Corrodes buildings and statues
Pollutant Standards Index; it is used to measure air quality
Irritation of the eyes, nose and throat
Ways to reduce air pollution (1) Use public transport, walk, cycle, (2) Switch off idling engines