Environment & Ecology · Environment

Consider the following pairs related to categories of air pollutants: 1. Primary pollutant: Emitted directly into the atmosphere; e.g., Carbon monoxide, Carbon dioxide. 2. Secondary pollutant: Generated through chemical reactions involving primary pollutants; e.g., Ozone, Peroxyacetyl nitrate (PAN). 3. Qualitative pollutant: Pollutants that do not occur naturally and are introduced by human activity; e.g., DDT, synthetic polymers. How many of the pairs given above are correctly matched?