Human: What are the most common questions about the ozone layer? Assistant: 

1. What is the ozone layer and how does it work?
2. How does climate change affect the ozone layer?
3. Why is the ozone layer important to life on Earth?
4. What is the difference between a UV index and an UV index forecast?
5. What causes the hole in the ozone layer over Antarctica?
6. What are the health effects of the ozone hole?