Here's how it happens:

* Waste gases: Many industries and vehicles release waste gases into the atmosphere. These gases include sulfur dioxide (SO2), nitrogen oxides (NOx), and carbon dioxide (CO2).

* Water droplets: These gases dissolve in the water droplets present in the atmosphere, forming weak acids.

* Acid rain: When these acidic water droplets fall to the ground, it's called acid rain.

Acid rain can have significant negative impacts on the environment, including:

* Damage to forests and crops: Acid rain can damage leaves and needles, making plants more susceptible to disease and pests.

* Pollution of lakes and rivers: Acid rain can acidify bodies of water, harming fish and other aquatic life.

* Corrosion of buildings and infrastructure: Acid rain can corrode metal structures, stone buildings, and even paint.

It's important to reduce the emissions of these harmful gases to prevent the formation of acid rain and protect our environment.