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Air Pollution

Tools

A	B
Acid rain	pH of 4.5
catalytic converters	contain plarinum alloy mesh
calcium hydroxides	used to treat soil acidity
neutralise	destroy the acidity
sulphuric acid	found in acid rain
sulphur dioxide	produced by burning coal
nitric acid	also found in acid rain!
corrodes	acid rain does this to cement and steel structure
alkali	calcium hydroxide
sulphur	found in fossil fuels such as coal

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