What role does ozone layer depletion play?
The ozone layer shields the earth from the sun’s harmful UV rays. Although ozone changes from day to day and place to place, world scientists have measured long-term decreases in ozone over the last ten years. Decreases in the ozone layer lead to increases in the amount of dangerous UV radiation that reaches the earth’s surface. Future levels of ozone will depend upon a combination of natural and man-made factors, including discontinuing the manufacture and use of chlorofluorocarbons (sprays) and other ozone-depleting chemicals.
