Question

acid rain occurs when sulfur dioxide in the atmosphere is oxidized in the presence of nitrogen dioxide. acid rain is an example of _______. a. a primary pollutant b. a secondary pollutant c. a tertiary pollutant d. none of the above please select the best answer from the choices provided

Explanation:

Primary pollutants are emitted directly into the atmosphere. Secondary pollutants are formed through chemical reactions between primary pollutants. Acid - rain is formed when sulfur dioxide (a primary pollutant) is oxidized in the presence of nitrogen dioxide, a chemical reaction process. So it is a secondary pollutant. There is no such common - term as tertiary pollutant in this context.

Answer:

B. a secondary pollutant