Environmentalmedium · Past Paper
What is the main reason why the 'hole' in the ozone layer is mostly over Antarctica?
AMore factories in Antarctica
BExtreme cold and Polar Stratospheric Clouds
CLack of sunlight
DHigh wind speeds at the equator
✓ Correct Answer: B — Extreme cold and Polar Stratospheric Clouds
Extremely low temperatures in the Antarctic winter allow for the formation of Polar Stratospheric Clouds, which provide surfaces for chemical reactions that destroy ozone.
Share this question
More from Environmental
- Which of the following is a result of photochemical smog?
- The concept of 'Hotspots' of biodiversity was given by:
- Which of the following is the main greenhouse gas responsible for global warming?
- What is the unit used to measure the concentration of Ozone in the atmosphere?
- Which of the following chemicals can cause 'skin cancer' due to ozone depletion?