PAIREDREADSavingEnergybyVanessaYorkExpositoryTextSTRATEGIES&SKILLSAPhotographyCredit:CoverEarthraceConservation.**Thetotalwordcountisbasedonwordsintherunningtextandheadingsonly.Numeralsandwordsincaptions,labels,diagrams,charts,andsidebarsarenotincluded.ComprehensionStrategy:AskandAnswerQuestionsSkill:CauseandEffectVocabularyStrategyHomophonesELLVocabularyavailable,bacteriaVocabularyenergy,natural,pollution,produce,renewable,replace,source,traditionalContentStandardsScienceEarthandSpaceScienceWordcount:853**Copyright©TheMcGraw-HillCompanies,Inc.Allrightsreserved.Nopartofthispublicationmaybereproducedordistributedinanyformorbyanymeans,orstoredinadatabaseorretrievalsystem,withoutthepriorwrittenconsentofTheMcGraw-HillCompanies,Inc.,including,butnotlimitedto,networkstorageortransmission,orbroadcastfordistancelearning.Sendallinquiriesto:McGraw-HillEducationTwoPennPlazaNewYork,NewYork10121ISBN:978-0-02-118605-1MHID:0-02-118605-7PrintedintheUnitedStates.123456789DOC151413121110PAIREDREADIntroduction..........................2Chapter1Biofuels...............................4Chapter2HydrogenFuel........................11Conclusion...........................14RespondtoReading.................15SavingEnergy...............16Glossary/Index.......................19FocusonScience.............20byVanessaYorkEssentialQuestionWhataredifferentkindsofenergy?IntroductionFuelisanymaterialthatstoresenergythatcanbeextractedandthenused.Weusefueltorunvehiclesandmachines.Wealsousefueltomakeelectricity.Weneedfueltohelpusgetaround.2BananaStock/PunchStockFossilfuelsarefuelssuchascoal,naturalgas,andoil.Wefindthesefuelsintheground.Therearesomebigproblemswithfossilfuels.Fossilfuelscausepollution.Fossilfuelsalsoproducegreenhousegases.Greenhousegasesmaycauseglobalwarming.Wearealsorunningoutoffossilfuels.Scientistsaretryingtothinkofwaystofixtheproblemswithfossilfuels.Dieselfumesfromtruckscausepollution.truckdieselfumesInOtherWordsbecomingscarce.Enespañol,runningoutofquieredeciracabándose.3TheMcGra...
