Beginning of Essay
The February 17, 1992 edition of time magazine's cover story started like this: "The world now knows that danger is shining through the sky. The evidence is overwhelming that the earth's stratospheric ozone layer-our shield against the sun's hazardous ultraviolet ....

Middle of Essay
.... oxygen atom from the ozone reacts with a chloride ion from chlorine monoxide, the ozone molecule is destroyed. So chlorine monoxide is an ozone destroyer. There is always a certain amount of chlorine monoxide in the atmosphere. It is important to remember that ozone is constantly being created and destroyed in the atmosphere. The amount of ozone in the atmosphere is based on these reactions. There are many factors that influence the amount of reactions like season, latitude, and solar cycle. Because of these factors ozone can vary wildly each day. In the northern latitudes there can be up to 40% difference than the day before. And in the equator regi ....