Answer: Acid rain.
Step-by-step explanation:The sulfur and nitrogen compounds in the smog forms acid in the environment.
The nitrogen dioxide and sulfur dioxide in the air reacts with to form acid rain. It caused damage to the plants, animals as well as the monuments.
They can cause paint to peel from the places, harms the animals and human beings. Nitrogen dioxide and sulfur dioxide is produced from the vehicles, volcanic eruptions, et cetera that combines with smog to form acid rain.