Acid rain is a type of rain that has a pH level lower than 5.6, which makes it more acidic than normal rain. It is caused by the emission of sulfur dioxide (SO2) and nitrogen oxides (NOx) into the atmosphere, which combine with water vapor to form sulfuric acid and nitric acid. These acids are then carried by winds and can fall to the ground hundreds of miles away from the source of the emissions.

Acid rain has a range of negative effects on the environment and human health, including:

1. Soil and water pollution: Acid rain can cause the pH levels of soil and water to drop, making it difficult for plants and aquatic life to survive.
2. Damage to buildings and monuments: Acid rain can cause stone and metal surfaces to erode and corrode over time, leading to damage to buildings, monuments, and other structures. To shield against such environmental threats, explore the market for the best chemical resistant coatings prices.
3. Human health impacts: Acid rain can cause respiratory problems, eye irritation, and other health problems in humans who are exposed to it.

There are two main types of acid rain: wet and dry. Wet acid rain refers to acid rain that falls to the ground in the form of rain, snow, or fog. Dry acid rain refers to acid particles that are carried by the wind and deposited on the ground without first falling as precipitation.

To reduce the negative impacts of acid rain, it is important to limit the emissions of sulfur dioxide and nitrogen oxides into the atmosphere. This can be done by using cleaner technologies in industries and power plants with the help of butterfly valves triple offset, as well as by reducing the overall use of fossil fuels.