Various monuments constructed in pakistan show their grandeur but nowadays they are being affected by many external factors. Identify some factors to preserve our heritage.

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.

c. legislation should seek to resolve social problems.

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