第1題Ecosystemisaregioninwhichtheorganismsandthephysicalenvironmentforma()___________unit.AharmonizedBinteractingCsymbioticDphysical第2題Wildernessistheareawith___________humaninfluence.AmanyBmaximalCmuchDminimal第3題Environmentalscienceisan(a)____B_____fieldthatincludesbothscientificandsocialaspectsofhumanimpactontheworld.AindependentBinterdisciplinaryCtraditionalDimportant第4題Environmentiseverythingthataffectsan()_____duringitslifetime.AanimalBplantCpeopleDorganism第1題ThefirstworldwidemeetingofheadofstatethatformallyknownastheUnitedNationsconferenceonEnvironmentandDevelopmentwasheldin_____in1992.ARaodeJaneiroBParisCKyotoDCopenhagen第2題Environmentalissuesdonotnecessarilycoincidewithartificialpoliticalboundaries.()第3題Environmentalproblemsinvolvesocial,ethical,political,andeconomicissues,notjustscientificissues.()第4題Environmentalscienceisaninterrelatedareaofstudythatincludesbothappliedandtheoreticalaspectsofhumanimpactontheworld.()第5題Manyenvironmentalproblemshavebecomeglobalinnature.()第6題Sustainabledevelopmentisdevelopmenttomeetthepresentneedswithoutsacrificingtheneedsoffuturegenerations()Unit1-4作業(yè)第1題第2題第3題Unit2-1作業(yè)第1題Riskisthe___________thataconditionoractionwillleadtoaninjury,damage,orloss.ApossibilityBprobabilityCchanceDconsequence第2題Riskassessmentistheuseof_____________toestimatetheprobabilityofharmtohumanhealthortheenvironment.AtheoriesandtechnologiesBmodelsandequationsCfactsandassumptionsDmeasurementsandanalyses第3題Riskmanagementisadecision-makingprocessofweighingpolicyalternativesandselectingthemostappropriateregulatoryaction.()第4題Negligibleriskisthezerorisk.()第5題Unit2-2作業(yè)第1題Renewableresourcesdon’tinclude________.ASoilBvegetation,CwaterDfossilfuels第2題Pollutionisaprimary_______AenvironmentalbenefitBeconomicbefitCenvironmentalcostDeconomiccost第3題Airpollution,waterpollution,plantandanimalextinctions,Airpollution,waterpollution,plantandanimalextinctions,depletionofaresourceareallexampleoftheenvironmentalcostsofresourceexploitation.()第4題

Cost-benefitanalysisisaninformalprocessftodeterminewhetherapolicygeneratesmoresocialcoststhansocialbenefits.

Unit2-3作業(yè)第1題_____istheprocessofassessingtheenvironmentaleffectsassociatedwiththeproduction,use,reuse,anddisposalofaproductoveritsentireusefullife.ALifecycleanalysisBExtendedproductresponsibilityCCost-benefitanalysisDRiskmanagement第2題Extendedproductresponsibilityistheconceptthattheproducerofaproductisresponsibleforallthenegativeeffectsinvolvedinitsproduction,includingtheultimatedisposaloftheproductwhenitsusefullifeisover.()Unit2-4作業(yè)第1題第2題Unit3-1作業(yè)第1題Naturalselectionistheprocessthatdetermineswhichindividualswithinaspecieswill______________thenextgeneration.AproducetheiroffspringforBgeneratetheirgenesforCgrowandpasstheirgenestoDreproduceandpasstheirgenesto第2題Anecosystemapproachisimportanttodealingwithenvironmentalproblems.()第3題Nicheisthefunctionalroleanorganismhasinitssurroundings.()Unit3-2作業(yè)第1題Commensalismistherelationshipbetweenorganismsinwhichoneorganismbenefitswhiletheotheris__________.AnotaffectedBmuchaffectedChurtDdamaged第2題Thecompetitiveexclusionprincipleisthatnotwospeciescanoccupythesame____inthesameplaceatthesametime.AhabitatBecologicalnicheCpreyDenvironment第3題Intheecosystem,thecommondecomposersare__________.AgrassesBanimalsCfungiandbacteriaDtrees第4題Keystonespeciesarethespeciesthathaveacriticalroletoplayinthemaintenanceofspecificecosystems.()第5題Acommunityistheabioticportionofanecosystemthatisasettingofinteractingpopulationsoforganisms.()Unit3-3作業(yè)第1題Climaxcommunityistherelative_________communitythattheresultofsuccession.Astableandshort-termBstableandlong-lastingCstableandlargeDstableandconstant第2題Successionistheconceptthatcommunitiesproceedthroughaseriesofrecognizable,predictablechangesinstructureovertime.()第3題Biomesareterrestrialclimaxcommunitieswithwidegeographicdistribution.()Unit3-4作業(yè)第1題第2題第3題Unit4-1作業(yè)第1題Thepopulationsofthesamespecieshavesomespecificcharacteristics.Someimportantcharacteristicsofthepopulationsinclude____________.AgeneticsBNatalityandmortalityCsexratioandagedistributionDdensityandspatialdistributionEgrowthrate正確答案：ABCDE第2題Agedistributionisthenumberofindividualsofeachageinthepopulationwhichinfluencesgreatlytherateofpopulationgrowth.()第3題Populationdensityisthetotalofpeopleinacountry,whichdoesnotrelatethesizeofthepopulationtotheresourcesavailable.()Unit4-2作業(yè)第1題Exponentialgrowthphaseisthestageonatypicalpopulationgrowthcurvewhentheoffspringofaspeciesbegintomateandhaveyoungwhiletheparentsmaybeproducingasecondsetofoffspring,whichresultsinapopulationincreaseata(an)______A______rate.AacceleratingBstableCdecreasingDconstant第2題______isthenumberofindividualsofaspeciesthatcanbemaintainedinanarea,overtime,withoutharmingthehabitat.APopulationBSustainabilityCCarryingcapacityDVulnerability第3題Thedensity-independentlimitingfactorsthataffectpopulationsizeinclude__.AfoodBweatherCpredatorDcompetition第4題K-strategistsareorganismsthattypicallyreachastablepopulationasthepopulationreachesthecarryingcapacity.()第5題r-strategistsareorganismsthattypicallyexploitsunstableenvironments.()第6題第7題第8題Unit5-1作業(yè)第1題Biodiversityisthe_______ofgenes,species,andecosysteminaregion.AnumberBrichnessCquantityDdiversity第2題Thevaluesofbiodiversityinclude________.AbiologicalandecosystemservicevaluesBdirecteconomicvaluesCethicalvaluesDnovalues正確答案：ABC第3題Theprimarycausesofbiodiversitylossarehabitatlossbyhumansconvertingecosystemstoagricultureandgrazing,overoverexploitationbyharvestingspeciesatunsustainablelevel