Question

___ has been causing most damage to the Taj Mahal.

Answer 1

The Taj Mahal is situated in Agra. The air in this place contains high levels of sulphur and nitrogen oxides. This is due to the large number of power plants and industries set up around this area. These have been a major cause for acid rain, which has reacted with the marble (calcium carbonate) the Taj Mahal is made of. This has resulted in a gradual damage to this wonderful structure, which even today, is a major spot attracting tourists from all around the world.