Focus on The Ozone Layer
Basic chemical structures, bond energies and the breaking of bonds by electromagnetic radiation is sufficient background to take an elementary look at a very important set of reactions taking place in another part of the atmosphere, the stratosphere.
© Environment and Climate Change Canada. Layers of the Atmosphere. Government of Canada https://www.canada.ca/en/environment-climate-change/services/air-pollution/issues/ozone-layer/depletion-impacts/about.html
The four reactions of the Chapman cycle are key to protecting life on earth from harmful ultraviolet radiation. It was determined that a set of anthropogenic compounds were putting this protective ozone layer at risk.
Refer to the information discussed in the previous Focus section as well as parts VI and VII of this text and elaborate on the following focus boxes, solving the problems that appear. Use the information to frame the story of the thinning ozone layer through the science and events.
https://earthobservatory. nasa. gov/featur es/vid eos/the-ozone-hole