Acid rain is caused by,or recent reports of acid rain in some industrial cities are due to the effect of atmospheric pollution by:
- AExcessive release of $CO_2$ by burning of fuels like wood and charcoal,cutting of forests and increased animal population.
- BExcessive release of $NO_2$ and $SO_2$ in the atmosphere by burning of fossil fuels.
- CExcessive release of $NH_3$ by industrial plants and coal gas.
- DExcessive release of $CO$ in the atmosphere by incomplete combustion of coke,charcoal and other carbonaceous fuels in the paucity of oxygen.
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$II -$ The soil surface draws up salts from the water.
$III -$ Salts are deposited as a thin crust on the land surface.
$IV -$ Salts start accumulating around the roots of the plants.
$V -$ The increasing concentration of salts becomes favorable for crop growth.
$VI -$ It is highly beneficial for agriculture.
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