TLDR: Acid rain is rain that is more acidic than normal rain. It can harm plants, animals, and buildings. It is caused by pollution from things like factories and cars.

Acid rain is a type of rain that is more acidic than normal rain. Normally, rain has a neutral pH, which means it is neither acidic nor alkaline. But acid rain has a lower pH, which makes it more acidic. Acid rain is caused by pollution in the air, specifically sulfur dioxide and nitrogen oxide. These pollutants come from things like factories, power plants, and cars. When these pollutants are released into the air, they react with water molecules in the atmosphere to form acids. These acids then fall to the ground as acid rain.

Acid rain can have harmful effects on the environment. It can damage plants by making the soil too acidic for them to grow properly. It can also harm aquatic animals by making the water too acidic for them to survive. In addition, acid rain can corrode buildings and infrastructure, such as bridges and statues. It can even affect human health, causing respiratory problems and other issues.

To address the problem of acid rain, many countries have implemented regulations to reduce the emissions of sulfur dioxide and nitrogen oxide. These regulations have been successful in reducing the levels of acid rain in some areas. However, acid rain is still a problem in certain regions, especially in areas with high levels of pollution.

Overall, acid rain is a serious environmental issue that can have negative impacts on plants, animals, and infrastructure. It is caused by pollution from human activities, and efforts are being made to reduce its occurrence.