Projecting actual changes and the effects of those changes over the (i) _______ several centuries cannot be accomplished with exactness. Not only will the overall effects be difficult to predict, the real problem comes in predicting the effects on regions and specific localities. For example, the scientists know that if global warming makes the ocean temperatures warmer then the result can be hurricanes of more intensity and frequency. But, “can be” and “will be” are not (ii) _______ synonymous. The causes of global wanning are known but the exact results and the degrees of the results aren’t. Uncertainty as to the gravity and extent of global warming will continue until some certainty is extracted (iii) _______ factual, current, and objective data. At this point in time, the “wait and see” philosophy has to come into play. Although uncertainty is a serious concern, there are things people can do. If there is a “no ozone” day in your community, try to (iv) _______ to the guidelines set forth by government officials. Don’t bum leaves and don’t drive unless it is necessary. Carpooling is good not only on “no ozone” days, but all the (v) _______. Don’t continue to send unnecessary items to the landfills. Recycle. And plant trees – for shade and cooling – as well as for decorative

(i)_____

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