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1、GenreComprehensionSkillTextFeaturesScienceContentNonfictionCompareand•CaptionsRocksandContrast•LabelsMinerals•CallOuts•GlossaryScottForesmanScience6.9ì<(sk$m)=bdjjgf<+^-Ä-U-Ä-UISBN0-328-13996-313996_01-04_CVR_FSD.inddCover15/25/20054:06:33PMVocabularyExtende
2、dVocabularyWhatdidyoulearn?crystalacceleratederosionhumusalkaline1.Soilbeganassolidrock.Howdiditdevelopintoigneousrockcarbonicacidanecosystemtosustainplantandanimallife?metamorphicrockchemicalweatheringorganicmattergeologicalerosion2.Explainthemajorcausesof
3、landerosion.rocklandformssedimentorganicfarming3.Whatanimalscontributetotheformationofsedimentaryrockrootnodulestopsoil?How?4.Topsoils,richinhumus,arenecessaryinagriculture.Writetoexplaininwhatwaystopsoilcanbeenrichedtoobtainbettercrops.5.CompareandContrast
4、Makeacharttocompareandcontrastorganicfarmingandnon-organicfarming.PictureCreditsEveryefforthasbeenmadetosecurepermissionandprovideappropriatecreditforphotographicmaterial.Thepublisherdeeplyregretsanyomissionandpledgestocorrecterrorscalledtoitsattentioninsub
5、sequenteditions.Photolocatorsdenotedasfollows:Top(T),Center(C),Bottom(B),Left(L),Right(R),Background(Bkgd).3GettyImages;7(T)ClausMeyer/MindenPictures;12(BR)JacquiHurst/DKImages.Unlessotherwiseacknowledged,allphotographsarethecopyright©ofDorlingKindersley,ad
6、ivisionofPearson.ISBN:0-328-13996-3byJenniferCoates-ConroyCopyright©PearsonEducation,Inc.AllRightsReserved.PrintedintheUnitedStatesofAmerica.ThispublicationisprotectedbyCopyright,andpermissionshouldbeobtainedfromthepublisherpriortoanyprohibitedreproduction,
7、storageinaretrievalsystem,ortransmissioninanyformbyanymeans,electronic,mechanical,photocopying,recording,orlikewise.Forinformationregardingpermission(s),writetoPermissionsDepartment,ScottForesman,1900EastLakeAvenue,Glenview,Illinois60025.345678910V010131211
8、10090807060513996_01-04_CVR_FSD.inddCover213996_05-20_FSD.indd15/25/20054:06:54PM5/25/20054:15:46PMWhatYouAlreadyKnowOurEarth’sbasiclandcomponentsarerocks,minerals,andSedimentaryrocks,suchaslimestone,s
