Chemicals in the atmosphere combine with one another and with natural components of air to form new,harmful chemicals,called primary pollutants.

Question

Quizplus · Accepted Answer

Primary pollutants are those emitted directly from a source, such as carbon monoxide from car exhausts or sulfur dioxide from factories. The combination of chemicals in the atmosphere to form new, harmful substances results in secondary pollutants, not primary pollutants.

Chemicals in the Atmosphere Combine with One Another and with Natural