What are some of the cause of acid rain​

Acid rain results when sulfur dioxide (SO2) and nitrogen oxides (NOX) are emitted into the atmosphere and transported by wind and air currents. The SO2 and NOX react with water, oxygen and other chemicals to form sulfuric and nitric acids. These then mix with water and other materials before falling to the ground.

The release of sulfur dioxide and nitrogen oxides into the air.

Explanation:

Your question does not add any specific guidelines for answers so I'll just cover the basics.

Sulfur dioxide (or SO2) and nitrogen oxides (NOX) are released into the air from powerplants after fossil fuel is burnt. These gases are admitted into the atmostphere, and get carried by air currents. They react with other chemicals and create sulfuric and nitric acids. They then mix with water before falling to the ground in precipitation, i.e. acid rain.

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the correct option is c.

isotopes refers to different forms of the same element with the same atomic number but different mass number as a result of difference in their neutron numbers. isotopes have different relative atomic mass but share the same chemical properties.