byMariaGillChangingLandscapesExpositoryTextPAIREDREADStudentsSaveWetlandsSTRATEGIES&SKILLSAPhotographyCredit:CORBIS/SuperStock**Thetotalwordcountisbasedonwordsintherunningtextandheadingsonly.Numeralsandwordsincaptions,labels,diagrams,charts,andsidebarsarenotincluded.ComprehensionStrategy:RereadSkill:CompareandContrastVocabularyStrategyMultiple-MeaningWordsVocabularyalter,collapse,crisis,destruction,hazards,severe,substantial,unpredictableContentStandardsScienceEarthScienceWordCount:1,471**Copyright©TheMcGraw-HillCompanies,Inc.Allrightsreserved.Nopartofthispublicationmaybereproducedordistributedinanyformorbyanymeans,orstoredinadatabaseorretrievalsystem,withoutthepriorwrittenconsentofTheMcGraw-HillCompanies,Inc.,including,butnotlimitedto,networkstorageortransmission,orbroadcastfordistancelearning.Sendallinquiriesto:McGraw-HillEducationTwoPennPlazaNewYork,NewYork10121ISBN:978-0-02-118855-0MHID:0-02-118855-6PrintedintheUnitedStates.123456789QLM151413121110byMariaGillChangingLandscapesPAIREDREADIntroduction.................................2Chapter1CrumblingLandscapes.......................4Chapter2SuddenChanges!.............................8Chapter3FixingtheDamage..........................12Conclusion..................................14RespondtoReading.......................15StudentsSaveWetlands...........16Glossary/Index..............................19FocusonScience................20EssentialQuestionHowdopeoplerespondtonaturaldisasters?Imagineyoustepintoatimemachineandtravelthousandsofyearsbackintime.Youstepoutandnoticealandscapethatlooksverydifferenttotheoneyouleft.Therearehighmountainsinsteadofhills.Therivercutsstraightthroughthelandinsteadofmeandering.Andwheredidthosetoweringcliffscomefrom?Thetimemachinedidn’tmakeamistake.Thisiswhattheplacewhereyoulivelookedlikethousandsofyearsago.Whydoesitlooksodifferent?IntroductionWatercarvedoutthiscanyon.2CORBIS/SuperStockEarth’ssurfaceisalwayschanging.Someofthebiggestchangesarethosethathappengraduallyoverthousandsofyears....
