MOTOR VEHICLES ACCOUNT FOR 75 PERCENT OF _________ IN THE MAJORA. P...

9- - DE THI TS VAO LOP 10 (08-09)
DE THI TS VAO LOP 10 (08-09)
9- Motor vehicles account for 75 percent of _________ in the majorA. pollution air B. air pollution C. air polluting D. air polluted