Suggested AnswerKey Aerosols,toxicfumesand gasescausethe hole in the ozone A: Whatis theeffectof pollution? Ioyer to increase,which makesthe sun rays all the more 8r Wel[pollutioncausesverypoor air qualityin cities. dangerous. Riversandlakesarefullof industrialwaste.Weneedto Theurbansprawlhasgivenriseto mega-cities with scores of do somethingbeforeit'stoolate. problems likepollutionandcrime. A: Whatcanwedo? Scandinavian countrieshavea richnetworkof cyclepaths to
Suggested AnswerKey Aerosols,toxicfumesand gasescausethe hole in the ozone A: Whatis theeffectof pollution? Ioyer to increase,which makesthe sun rays all the more 8r Wel[pollutioncausesverypoor air qualityin cities. dangerous. Riversandlakesarefullof industrialwaste.Weneedto Theurbansprawlhasgivenriseto mega-cities with scores of do somethingbeforeit'stoolate. problems likepollutionandcrime. A: Whatcanwedo? Scandinavian countrieshavea richnetworkof cyclepaths to
Suggested AnswerKey Aerosols,toxicfumesand gasescausethe hole in the ozone A: Whatis theeffectof pollution? Ioyer to increase,which makesthe sun rays all the more 8r Wel[pollutioncausesverypoor air qualityin cities. dangerous. Riversandlakesarefullof industrialwaste.Weneedto Theurbansprawlhasgivenriseto mega-cities with scores of do somethingbeforeit'stoolate. problems likepollutionandcrime. A: Whatcanwedo? Scandinavian countrieshavea richnetworkof cyclepaths to
Suggested AnswerKey Aerosols,toxicfumesand gasescausethe hole in the ozone A: Whatis theeffectof pollution? Ioyer to increase,which makesthe sun rays all the more 8r Wel[pollutioncausesverypoor air qualityin cities. dangerous. Riversandlakesarefullof industrialwaste.Weneedto Theurbansprawlhasgivenriseto mega-cities with scores of do somethingbeforeit'stoolate. problems likepollutionandcrime. A: Whatcanwedo? Scandinavian countrieshavea richnetworkof cyclepaths to
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