interactivestudenteditionNewYork,NewYorkColumbus,OhioChicago,IllinoisPeoria,IllinoisWoodlandHills,CaliforniaSciencenlinenlineFocusOnLifeScienceRedwoodtreescanliveover200yearsandgrowtoheightsover90meterstall.Therearethreemembersoftheredwoodfam-ily—coastredwoods,giantsequoias,anddawnredwoods.Copyright©2007byTheMcGraw-HillCompanies,Inc.Allrightsreserved.ExceptaspermittedundertheUnitedStatesCopyrightAct,nopartofthispublicationmaybereproducedordistributedinanyformorbyanymeans,orstoredinadatabaseorretrievalsystem,withoutpriorwrittenpermissionofthepublisher.TheNationalGeographicfeaturesweredesignedanddevelopedbyNationalGeographic’sChildren’sBooksandEducationDivision.Copyright©NationalGeographic.Thename“NationalGeographic”andtheYellowBorderRectanglearetrademarksofNationalGeographicandtheiruse,withoutpriorwrittenpermission,isstrictlyprohibited.Sendallinquiriesto:Glencoe/McGraw-Hill8787OrionPlaceColumbus,OH43240-4027ISBN-13:978-0-07-879434-6ISBN-10:0-07-879434-XPrintedintheUnitedStatesofAmerica.345678910079/0431110090807StudyTools••InteractiveTables•InteractiveTimeLine•AnimatedIllustrations•LessonSelf-CheckQuizzes•ChapterTestPractice•StandardizedTestPractice•VocabularyPuzzleMaker•InteractiveTutor•MultilingualScienceGlossary•StudytoGo•OnlineStudentEdition•BrainPopMoviesExtensions•VirtualLabs•MicroscopyLinks•PeriodicTableLinks•CareerLinks•PrescreenedWebLinks•WebQuestProject•ScienceFairIdeas•InternetLabsForTeachers•TeacherBulletinBoard•TeachingToday,andmuchmore!CheckoutthefollowingfeaturesonyourOnlineLearningCenter:ca7.msscience.comiiiIntroductiontoInvestigationandExperimentation...............................27.a,7.b,7.c,7.d,7.eUnit1CellBiology...........................42Chapter1CellStructureandFunction.......441.a,1.b,1.c,1.d,2.e,7.a,7.c,7.d,7.eChapter2FromaCelltoanOrganism........841.c,1.e,1.f,5.a,7.a,7.d,7.eUnit2ReproductionandGenetics............120Chapter3ReproductionofOrganisms......1222.a,2.b,5.f,7.a,7.b,7.c,7.d,7.eChapter4Genetics.........
