Acid rain: Sulphur dioxide, Oxides of nitrogen, Burning fuels containing sulfur, Burning fuels at very high temperatures, Use catalytic converters, Use desulfurisation, Global warming: Carbon dioxide, Methane, Combustion of fossil fuels, Emissions from cattle, Reduce fossil fuel use, Reduce beef consumption, Global dimming: Incomplete combustion of fuels, Blackens buildings, Reflects light back into space, Ensure plentiful oxygen,

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