Erosion of Ozone Layer and Global Warming: The structure of the Ozone Layer

The video explains the stratosphere's ozone layer, which contains 90% of atmospheric ozone (O3). Ozone is crucial for absorbing harmful UV radiation, protecting life on Earth. The video details the ozone creation and destruction cycle, where UV rays split O2 molecules, forming ozone and releasing heat. Historically, ozone levels were stable until the 1970s, when depletion led to holes near the South Pole.

What happens to UV rays when they interact with ozone?

Describe the changes in ozone levels since the 1970s.