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In India, the first report of acid rain came from Bombay in 1974. Instances of acid rain are being reported from metropolitan cities.
In India, the annual SO2 emission has almost doubled in the last decade due to increased fossil fuel consumption. Lowering of soil pH is reported from north-eastern India, coastal Karnataka and Kerala, parts of Orissa, West Bengal and Bihar.
Indicators
Lichens serve as good bio-indicators for air pollution. In the variety of pH around 6.0, several animals, those are important food items for fish decline. These include the freshwater shrimp, crayfish, snails and some small mussels.