jack英语课-15-07科普初低

NaturalresourcesarerenewableorRenewableresourcescanbereplacedbyanaturalprocessusedwiselyandgivenenoughtime,suchassoil,water,forest,plantsandNonrenewableresourcescannotbere-madebynatureagainandmayprobablybeexhaustedifnotusedproperlyastheyareconsumedmuchfasterthannaturecanre-createthem.Theyincludefossilfuelssuchascoal,petroleum,andnaturalgas.Plantsandanimalscanrenewthemselvesconstantlyiftheyaregivenenoughtime.Iftreesareovercutordeforested,thehabitatsofmanyanimalswillbedestroyedandtheirlivescanbeendangered.Forexample,monarchbutterfliesmigrateover3000kmsfromCanadaandUSAtoforeststotheMexicanstateofMichoacan,aperfectplacetoliveineverywinterseason.Iftheseforestsaredestroyed,theywilllosttheirhabitats.Theproblemofdeforestation eseriousandworldwide.ManyanimalsespeciallyintheAmazonrainforestinBrazilhavinglosttheir ehomelessandstarvingtodeath.TheyareforcedtogetconcentratedinnewandmuchsmallerplaceslackingfoodandotherTheendangeredcreaturesincludethesloth,goldenliontamarin,jaguarandhyacinthmacaw.Naturalresourcesaredividedintotwoparts:renewableandRenewableresourcescanbereplacedbyanaturalprocessgivenenoughtime.Plantsandanimals,someoftherenewableresources,stillneedacertainamountoftimetogrow,mature,andreproduceagain.Nonrenewableresourcesaresomethingthatcannotbemadebynatureagain,suchascoal,petroleum,andnaturalgas.Treesarealsoarenewableresource.However,canendangertheanimalsintheforests.OneoftheseanimalsincludestheMonarchbutterfly.Everyfall,manyMonarchbutterfliesheadtowardstheforestsintheMexicanstatewhichconsistmainlyofpineandoaktrees,makingthemaperfectplaceduringthewinterseason.IftheMonarch’shabitatisdestroyed,thenbutterflieswillnolongerhaveaplacetomigratetoandliveforhalfoftheyear.arefightingforsurvival.Theyareforcedtoconcentratedinmuchsmallerareas,wherethereisbarelysupplyallofthemfood,andnowtheyare --WhichofthefollowingisnotGrains–pasta,wholegrainbread,crackers,rice,Vegetables–spinach,mushrooms,lettuce,oranges,Milk–milk,yogurt,MeatandBeans–salmon,chicken,eggs,beans,Afoodservingisaspecialamountoffoodthatismeasuredin A. B. C. D.allWhatisthefirststeptomakegoodfoodTolearnitwithJack.ToknowwhichfoodsareToknowwhichfoodsareToknowaboutthefoodguideWhichofthefollowingcontainslargeamountofcarbohydrates,proteins,minerals,andvitaminsA,B,andE.A. B. C. D.MeatandVegetablesarelowinfatandareanimportantsourceof A. B. C. D.Thevitaminsfoundinvegetablesaidinimprovingour ,andprovidinggoodeyesightandhealthyskin.A.digestive B.nerve C.blood D.circulatoryWhatisanimportantsourceoffiberwhichisahealthyelementfortheA.Meantand B.Milk C.Fruit D.VegetablesWhatcanbefoundinmilkthatisnecessaryforboneformation,strongteeth,andbodygrowthandrepair.Calciumand B.CalciumandC.Vitaminsand D.FatsandPoultryandbeefaregoodsourcesof A. B. C. D.mainlyprovidethebodywithfatsandA. B. C. D.It hoursforfoodtogothroughtheprocessofdigestioninthe10to B.5to B.20to D.8to12Thefoodmassgoesdowntothestomachandmixeswith thathelptofurtherbreakdownthefoodmass.A. B. C.acid D.Thebileandjuicesfinishbreakingdownthefoodthatits canpassintotheA. B. C.food D.Theextramountthatdoesnotpassintothebloodcontinuesto