高中英語必修二u4重點(diǎn)單詞

高中英語必修二u4重點(diǎn)單詞

1.Extinct(adjective):nolongerinexistence;havingdiedout.

Example:Thedodobirdbecameextinctinthe17thcenturyduetohuntingandhabitatdestruction.

2.Endangered(adjective):seriouslyatriskofextinction.

Example:Theblackrhinoisanendangeredspeciesduetopoachingforitshorn.

3.Habitat(noun):thenaturalenvironmentinwhichaplantoranimallives.

Example:Therainforestprovidesasuitablehabitatforawiderangeofspecies.

4.Conservation(noun):theprotection,preservation,andmanagementofnaturalresources.

Example:Thenationalparkwasestablishedtopromotetheconservationofwildlife.

5.Poach(verb):toillegallyhuntorcapturewildanimals.

Example:Thegovernmenthasimplementedstrictermeasurestocombatpoaching.

6.Sanctuary(noun):aplaceofrefugeorprotectionforwildlife.

Example:Thewildlifesanctuaryprovidesasafehavenforendangeredspecies.

7.Biodiversity(noun):thevarietyandvariabilityoflivingorganismsinaparticularhabitatorecosystem.

Example:Thecoralreefisknownforitshighbiodiversity.

8.Ecosystem(noun):acommunityoflivingorganismsandtheirphysicalenvironment,interactingasasystem.

Example:TheAmazonrainforestisoneofthemostdiverseecosystemsonearth.

9.Predator(noun):ananimalthatnaturallypreysonothers.

Example:Lionsareapexpredators,huntingandfeedingonherbivores.

10.Prey(noun):ananimalthatishuntedandkilledbyanotheranimalforfood.

Example:Gazellesarefrequentlytargetedaspreybycheetahs.

11.Migration(noun):theseasonalmovementofanimalsfromoneregiontoanother.

Example:Birdsundertakelong-distancemigrationtofindsuitablebreedinggrounds.

12.Erosion(noun):theprocessofwearingawayorbreakingdownofrocksandsoilbynaturalforces,suchaswindorwater.

Example:Heavyrainfallcancauseerosionandleadtolandslides.

13.Deforestation(noun):theremovalorclearanceofforestsortreesfromaland.

Example:Therapiddeforestationintheareahasresultedinthelossofwildlifehabitats.

14.Pollution(noun):theintroductionofharmfulsubstancesintotheenvironment,causingdamagetotheecosystem.

Example:Industrialwastedisposalisasignificantsourceofwaterpollution.

15.Sustainable(adjective):capableofbeingmaintainedorcontinuedoverthelongterm.

Example:Renewableenergysourceslikesolarpowercontributetosustainabledevelopment.

16.Adaptation(noun):theprocessofadjustingtoenvironmentalconditions.

Example:PolarbearshaveevolvedadaptationstosurviveintheArcticclimate.

17.Wildlife(noun):animals,birds,andplantslivingintheirnaturalenvironment.

Example:Nationalparksareessentialfortheconservationofwildlife.

18.Ecologicalbalance(noun):astateofdynamicequilibriumwithinanecosystem,whereallorganismscoexistandinteractharmoniously.

Example:Humanactivitiescandisrupttheecologicalbalanceofanecosystem.

19.Invasivespecies(noun):anon-nativespeciesthatposesathreattothenativespeciesandecosystem.

Example:TheintroductionoftheAsiancarphasnegativelyimpactedthelocalfishpopulation.

20.Conservationist(noun):apersonwhoadvocatesorsupportstheprotectionandpreservationoftheenvironmentandwildlife.

Example:Thefamousconservationistfoughttirelesslytosaveendangeredspecies.

21.Keystonespecies(noun):aspeciesthathasadisproportionatelylargeeffectonitsenvironmentrelativetoitsabundance.Example:Theremovalofkeystonespecieslikethestarfishcanleadtotheovergrowthofmusselsinanecosystem.22.Climatechange(noun):long-termalterationoftemperatureandtypicalweatherpatternsinaplaceoracrosstheglobe.Example:Climatechangeiscausingshiftsinmigrationpatternsformanybirdspecies.23.Coralbleaching(noun):theprocesswherecoralslosetheirvibrantcolorsduetoenvironmentalstress,oftenduetowarmeroceantemperatures.Example:RisingseatemperatureshaveledtowidespreadcoralbleachingintheGreatBarrierReef.24.Habitatfragmentation(noun):theprocessofbreakingupacontinuoushabitatintosmaller,isolatedfragments.Example:Habitatfragmentationduetourbanizationhasisolatedpopulationsofwildlife,reducinggeneticdiversity.25.Reproductiverate(noun):thenumberofoffspringproducedbyanorganismoveraspecificperiod.Example:Ahighreproductiverateisoneofthefactorscontributingtothesuccessofinsects.26.Carryingcapacity(noun):themaximumpopulationsizeofaspeciesthatanenvironmentcansustainindefinitely.Example:Thecarryingcapacityoftheforestmaybereducedbyover-huntingandhabitatdestruction.27.Ecologicalniche(noun):theroleandpositionaspecieshasinitsenvironment,includingitsinteractionswithotherspeciesandtheuseofresources.Example:Eachspeciesoccupiesauniqueecologicalnichewithinthefoodweb.28.Foodweb(noun):asystemofinterlockingandinterdependentfoodchainsinanecosystem.Example:Afoodwebinaforestincludesnotonlypredatorsandpreybutalsodecomposersandplants.29.photosynthesis(noun):theprocessbywhichgreenplantsandcertainotherorganismsusesunlighttosynthesizenutrientsfromcarbondioxideandwater.Example:Photosynthesisisresponsibleforproducingoxygenandcarbohydratesinplants.30.Decomposer(noun):anorganism,oftenabacteriumorfungus,thatbreaksdowndeadorganicmaterial.Example:Decomposersplayavitalroleinrecyclingnutrientsbackintotheecosystem.31.Ecologicalfootprint(noun):theimpactofhumanactivitiesontheenvironment,measuredintermsoftheareaoflandrequiredtosustainthoseactivities.Example:Reducingourecologicalfootprintinvolvesconservingenergyandusingresourcesmoreefficiently.32.Acidrain(noun):rainthathasbecomeacidicduetothepresenceofpollutantsintheatmosphere.Example:Acidraincandamageforestsandaquaticecosystems.33.Bioaccumulation(noun):theprocessbywhichsubstances,suchaspesticidesorheavymetals,buildupinthetissuesoflivingorganisms.Example:Bioaccumulationinthefoodchaincanresultinhighlevelsoftoxinsintoppredators.34.Ozonelayer(noun):aregionoftheEarth'sstratospherethatabsorbsmostoftheSun'sultravioletradiation.Example:TheozonelayerprotectslifeonEarthfromharmfulUVrays.35.Greenhouseeffect(noun):thewarmingoftheEarth'satmosphereduetothepresenceofgasesthattrapheatfromtheSun.Example:Thegreenhouseeffectisnatural,buthumanactivitieshaveintensifiedit,leadingtoglobalwarming.36.Carbonfootprint(noun):thetotalamountofgreenhousegases,especiallycarbondioxide,producedbyanindividual,organization,orevent.Example:Individualscanreducetheircarbonfootprintbychoosingtowalkorcycleinsteadofdriving.37.Alternativeenergy(noun):energyderivedfromrenewablesources,suchassolar,wind,orhydroelectricpower.Example:Alternativeenergysourcesarecrucialforreducingdependenceonfossilfuels.38.Sustainablefarming(noun):agriculturalpracticesthatareenvironmentallyfriendly,economicallyviable,andsociallyequitable.Example:Sustainablefarmingtechniquesaimtoprotectthesoilandbiodiversitywhileensuringfoodsecurity.39.Watercycle(noun):thecontinuousmovementofwateron,above,andbelowtheEarth'ssurface.Example:ThewatercycleisessentialformaintainingEarth'sfreshwatersupply.40.Deforestation(noun):theclearingorcuttingdownoftreesacrossalargeareaofforest.Example:Deforestationcontributestoclimatechangeandthelossofbiodiversity.41.Wetland(noun):anareaoflandthatissaturatedorfloodedwithwater,eitherpermanentlyorseasonally.Example:Wetlandsareimportantforfilteringpollutantsandprovidinghabitatformanyspecies.42.Mitigation(noun):theactionofreducingtheseverity,intensity,orimpactofsomething.Example:Mitigationstrategiesareneededtoreducetheimpactofclimatechangeonvulnerablecommunities.43.Renewableresource(noun):anaturalresourcethatcanbereplenishedorreplacednaturally,suchassolarenergyortimber.Example:Renewableresourcesarecrucialforlong-termenvironmentalsustainability.44.Non-renewableresource(noun):anaturalresourcethatcannotbereplenishedorreplacedonceitisdepleted,suchasfossilfuelsorminerals.Example:Non-renewableresourcesneedtobemanagedcarefullytoavoiddepletion.45.Environmentalimpact(noun):theeffectthathumanactivitieshaveontheenvironment.Example:Environmentalimpactassessmentsareconductedtopredictandmanagetheeffectsofnewprojects.46.Sustainabledevelopment(noun):developmentthatmeetstheneedsofthepresentwithoutcompromisingtheabilityoffuturegenerationstomeettheirownneeds.Example:Sustainabledevelopmentrequiresabalancebetweeneconomicgrowth,sociale