various monuments constructed in Pakistan show their grandeur but now a days they are being affected by many external factors identify those factors and suggest some measures to preserve our heritage.
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Answer:
Various external factors such as air pollution, acid rain, development, tourism, and ineffective policies are affecting the monuments.
Explanation:
Sulfur dioxide gases have polluted the air. They fall on the marble stone of the monuments in the form of acid rain. A corrosive reaction takes place, and it dissolves the marble and damages it badly.
Other than this, the construction of new buildings around the monuments is also affecting cultural heritage.
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Explanation:
- Various external which are affecting the mountain in Pakistan are “air pollution”, “acid rain”, and some “natural calamities”. “Acid rain” is a type of rain which is abnormally acidic, which means it has higher altitude of hydrogen ions (low pH).
- It can have damaging effects on plants, marine animals and infrastructure. Acidic rain is be the cause of emission of “sulphur dioxide” and “nitrogen oxide”, which reacts with water based molecules in the atmosphere to produce acid. “Industrialization” is also one of the reasons behind it.
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