1.CFCs and substitutes and the ozone hole. The environmental effects of CFCs and their substitutes a.CFCs - highly stable molecules, lifetime in the atmosphere of between 50 and 100 years; contain 2 or 3 chlorine atoms. b.CFCs substitutes ( transitional compounds) i.HCFCs - one or more of the chlorine atoms has been replaced by hydrogen atoms, lifetime in the atmosphere about 20 years, have a tenth or twentieth of the potential damage of the CFCs. ii.HFCs - …showed first 75 words of 4670 total…

…showed last 75 words of 4670 total… was concluded that car sharing reduced the distances traveled by car. Overall, in developing politically, socially and economically viable approaches to hitting transport's sustainability goal, there is roughly a three-way split between: vThe role of increased fuel efficiency. vModal shift. vTrip length reduction. It was concluded that a third of the reduction could be achieved by technical measures and two-thirds by demand management. 29.Remember this - 1 KWh = 3.6 Mj