Lakes and streams can be temporarily protected from acid rain by adding alkaline materials such as limestone (calcium carbonate) or lime (calcium oxide). Liming has been successful on a small scale over the past twenty years on Cape Cod, where fish have been maintained in otherwise acid lakes and ponds;123 it has also been used experimentally in the Adirondacks,124 and in Sweden,125 which is spending 13 million dollars annually on its liming program.
KeywordsAcid Rain Calcium Oxide Fuel Switching Stage Combustion Iron Pyrite
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