Acid rain is caused by A. SO2 and particulates B. NO2and particulates C. CO2and CFCs D. SO2 and NO2

Acid rain is caused by the emission of sulfur dioxide (SO2) and nitrogen oxides (NOx) into the atmosphere. These gases are released from power plants, factories, and vehicles. When they react with water vapor in the atmosphere, they form sulfuric acid (H2SO4) and nitric acid (HNO3). These acids then fall to the Earth as rain, snow, sleet, or fog.

Acid rain can have a number of negative effects on the environment. It can damage trees and other plants, kill fish and other aquatic life, and corrode buildings and other structures. It can also contribute to the acidification of lakes and streams.

Acid rain can also have a number of negative effects on human health. It can irritate the eyes, nose, and throat, and it can cause respiratory problems. It can also increase the risk of cancer.

There are a number of things that can be done to reduce the amount of acid rain that is produced. These include:

• Using cleaner fuels, such as natural gas, instead of coal and oil.
• Installing pollution control devices on power plants and factories.
• Reducing emissions from vehicles.
• Planting trees, which can help to absorb carbon dioxide from the atmosphere.

By taking these steps, we can help to reduce the amount of acid rain that is produced and protect the environment and human health.

The other options are incorrect because they do not cause acid rain. CO2 is a greenhouse gas, and CFCs are ozone-depleting substances. Neither of these gases causes acid rain.