CH-338
Air pollutants
Chemistry · Secondary 3 · Medium · Air pollutants
During incomplete combustion of petrol in car engines, carbon monoxide is released. Which statement best explains why carbon monoxide is dangerous to humans?
- It combines with haemoglobin and reduces oxygen transport in blood.
- It causes acid rain which corrodes buildings.
- It traps heat in the atmosphere, causing global warming.
- It reacts with ozone, thinning the ozone layer.
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