StudyGK

Practice MCQs, News & Typing Tutor
प्रैक्टिस MCQs, समाचार और टाइपिंग ट्यूटर
Prepare for SSC, CGL, UPSC and more — daily GK practice
SSC, CGL, UPSC और अन्य परीक्षाओं की तैयारी — दैनिक GK अभ्यास

Ozone depletion refers to the thinning of the ozone layer in the stratosphere. What is the ozone layer?

  • Ground-level smog
  • Tropospheric oxygen layer
  • A region in the stratosphere containing high concentrations of ozone that absorbs UV radiation
  • Ionospheric shield
Answer: 3