human
What are some of the most common questions asked about the ozone layer?
assistant
1. What is the ozone layer and what does it do?
2. How many molecules of ozone are there in the atmosphere?
3. Why is the ozone layer important?
4. How does the ozone layer form?
5. What is the difference between a stratosphere and a troposphere?
6. What causes the depletion of the ozone layer?