Column AColumn BA. Catalytic converter1. Particulate matterB. Electrostatic precipitator2. Carbon monoxide and nitrogen oxidesC. Earmuffs3. High noise lelelD. Landfills4.Solid Wastes

Column AColumn BA. Catalytic converter1. Particulate matterB. Electros

1.	Column AColumn BA. Catalytic converter1. Particulate matterB. Electrostatic precipitator2. Carbon monoxide and nitrogen oxidesC. Earmuffs3. High noise lelelD. Landfills4.Solid Wastes
Answer» $\begin{matrix} C o l u m n A & C o l u m n B A . C a t a l y t i c c o n v e r t e r & 1. P a r t i c u l a t e m a t t e r B . E l e c t r o s t a t i c p r e c i p i t a t o r & 2. C a r b o n m o n o x i d e a n d n i t r o g e n o x i d e s C . E a r m u f f s & 3. H i g h n o i s e l e l e l D . L a n d f i l l s & 4. S o l i d W a s t e s \end{matrix}$