Sulphur Dioxide is a gas that is a product of the combustion of fossil fuels such as coal and oils.
Sulphur dioxide combines with water and forms sulphuric acid found in condensed water in clouds and when it rains we call this rain acid rain.
Effects on Plants:
Trees and plants are often "burned" (top of tree is usually dead)
Causes calcium and magnesium ions to be leached out of the soil (plant can't grow)
Makes lakes acidic and releases Aluminium ions which causes thickening of mucus in a fish and reduces the ability to take in oxygen
Carbon Monoxide
Produced when fossil fuels such as gas are burned with insufficient oxygen.
The carbon monoxide joins with haemoglobin and forms carbaminohaemoglobin which blocks the haemoglobin from carrying oxygen
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