Relevant Competitive Tests:
Ozone depletion occurs commonly due to_______________?
A. Carbon dioxide
B. ChlorofluorocarbonsCorrect Answer
C. UV rays
D. Deforestation
Correct Option: B. Chlorofluorocarbons
This question has been verified by the PakPrep community moderation network for competitive examination accuracy.
Subject Overview
Explore thousands of solved past paper MCQs for Biology Mcqs categorized with explanations.
Browse All Biology Mcqs MCQs →