<human>: Is there a good online resource that I can use to learn about the ozone layer?
<bot>: Yes, there are many great online resources available for learning more about the ozone layer. You could start with the National Oceanic and Atmospheric Administration's website at https://www.noaa.gov/ocean-environment/science/ozone-layer/. This site has information on the ozone layer, its causes, health effects, and how it is monitored.