1. Decide whether the event shifts the supply or demand curve (or perhaps both).\ 2. Decide in which direction the curve shifts. 3. Use the siupply-and-demand diagram to see how the shift changes the equilibrium price and quantity.
Man-made causes of depletion of ozone layer: The main cause for the depletion of ozone is determined as excessive release of chlorine and bromine from man-made compounds such as chlorofluorocarbons (CFCs).
Ozone absorbs UV-B. UV-B would otherwise damage the DNA of all DNA-based life on / near Earth's surface. ozone is the chemical in our atmoshere that traps heat from the sun. It acts as a greenhouse, sunlight can come in but it can't go out.