2026 · Q91
In which one of the following regions of the Earth is the ozone hole prominently observed in the stratosphere?
general-sciencebiotech-environment-science
- AEquatorial region
- BArctic region
- CAntarctic region
- DTropical region
Explanation
The ozone hole is prominently observed in the stratosphere over the Antarctic region, where polar stratospheric clouds in the extreme cold activate chlorine from CFCs each Southern-Hemisphere spring. It is not observed over the equatorial, Arctic or tropical regions in comparable form. Hence option C is correct.