A. 12 most harmful greenhouse gases
B. 12 ozone depleting substances
C. 12 persistent organic pollutants
D. Both A&B
Home MCQs General Knowledge MCQs Quiz In context of environment, the term “dirty dozen” refers to ________ point ?
A. 12 most harmful greenhouse gases
B. 12 ozone depleting substances
C. 12 persistent organic pollutants
D. Both A&B