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 in the atmosphere. Sulfur dioxide is a primary pollutant, and when it is oxidized in the presence of nitrogen dioxide to form acid - rain, acid rain is a secondary pollutant as it is formed from chemical reactions of primary pollutants. There is no such widely - recognized term as tertiary pollutant in this context.

Answer:

B. a secondary pollutant