���������������������������������������������������������������byMeishGoldishCover,©Photodisc,©Corbis;p.6,©VanHasseltJohn/CorbisSygma;p.7,©Corel;p.8,©Corbis;p.9,©DarylBenson/Masterfile;p.10,©PunchStock;p.11,©Corbis;p.12,©KrisKuenning/NSF,©Dr.WillSilva/NSF;p.13,©APPhoto/AnchorageDailyNews,BillRoth;p.14,©NorbertWu/MindenPictures.Copyright©byHarcourt,Inc.Allrightsreserved.Nopartofthispublicationmaybereproducedortransmittedinanyformorbyanymeans,electronicormechanical,includingphotocopy,recording,oranyinformationstorageandretrievalsystem,withoutpermissioninwritingfromthepublisher.RequestsforpermissiontomakecopiesofanypartoftheworkshouldbeaddressedtoSchoolPer-missionsandCopyrights,Harcourt,Inc.,6277SeaHarborDrive,Orlando,Florida32887-6777.Fax:407-345-2418.HARCOURTandtheHarcourtLogoaretrademarksofHarcourt,Inc.,registeredintheUnitedStatesofAmericaand/orotherjurisdictions.PrintedintheUnitedStatesofAmericaISBN10:0-15-351089-7ISBN13:978-0-15-351089-2OrderingOptionsISBN10:0-15-350603-2(Grade6On-LevelCollection)ISBN13:978-0-15-350603-1(Grade6On-LevelCollection)ISBN10:0-15-357985-4(packageof5)ISBN13:978-0-15-357985-1(packageof5)Ifyouhavereceivedthesematerialsasexaminationcopiesfreeofcharge,HarcourtSchoolPub-lishersretainstitletothematerialsandtheymaynotberesold.Resaleofexaminationcopiesisstrictlyprohibitedandisillegal.Possessionofthispublicationinprintformatdoesnotentitleuserstoconvertthispublication,oranyportionofit,intoelectronicformat.1234567891017912111009080706ATaleofTwoLandsTheArcticandtheAntarcticPACIFICOCEANARCTICOCEANINDIANOCEANEquatorTheAntarcticEUROPEASIAAFRICAAUSTRALIATheArcticNorthPoleSouthPoleEasternHemisphereSNL03APE2X_U3L3-4MHarcourt/Grade233572HH2-3.2finalproof10/5/013IntroductionAtthetopoftheworldisafrozenregioncalledtheArctic.AtthebottomoftheworldisafrozenregioncalledtheAntarctic.Inmanyways,thetwoareasarealike.Eventheirnamesaresimilar.Perhapsthat’swhysomepeopletendtoconfusethetwopla...
